A Rexing hardwire kit is an essential accessory for any dash cam user looking to unlock advanced features like 24/7 parking surveillance and avoid constantly plugging in their device.

Essentially, it’s a small power management module that connects your dash cam directly to your vehicle’s fuse box, providing a stable, continuous power supply.

This means your dash cam can monitor your car even when the ignition is off, detecting impacts or motion and recording crucial evidence.

Beyond security, a hardwire kit also keeps your vehicle’s 12V cigarette lighter socket free for other uses, leading to a cleaner, more integrated installation.

Think of it as the ultimate upgrade for peace of mind on the road and in the parking lot.

Here’s a breakdown of top products related to hardwiring your dash cam:

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- Key Features: 4K front camera, 1080p rear camera, Wi-Fi, GPS, G-sensor, Parking Monitor.
- Average Price: Around $200-$250 varies with sales and bundle options.
- Pros: High resolution for clear footage, reliable brand, easy to use app, strong community support.
- Cons: Can be pricier than basic models, requires a high-capacity microSD card.
Rexing Smart Hardwire Kit USB-C
- Key Features: USB-C output, low voltage protection, ACC detection, suitable for parking mode.
- Average Price: Around $30-$40.
- Pros: Specifically designed for Rexing USB-C dash cams, ensures proper parking mode functionality, protects car battery.
- Cons: Only compatible with USB-C dash cams, installation requires basic electrical knowledge.
Rexing Smart Hardwire Kit Mini-USB
- Key Features: Mini-USB output, low voltage cut-off, ACC detection, supports parking mode.
- Pros: Ideal for older Rexing models or other dash cams using Mini-USB, reliable parking mode.
- Cons: Not for modern USB-C dash cams, requires careful fuse selection.
Add-A-Circuit Fuse Tap Kit Assorted
- Key Features: Includes various fuse tap sizes ATO, Mini, Micro2, Low Profile Mini, allows tapping into existing fuse slots.
- Average Price: Around $10-$15.
- Pros: Essential for a clean hardwire installation, versatile with multiple fuse types, relatively inexpensive.
- Cons: Does not include the hardwire kit itself, requires basic understanding of fuse box.
Multimeter Digital
- Key Features: Measures voltage, current, resistance, continuity testing.
- Average Price: Around $20-$50.
- Pros: Crucial tool for identifying constant and ACC power wires, versatile for various automotive electrical tasks, enhances safety during installation.
- Cons: Can be intimidating for beginners, not strictly necessary for a very simple install but highly recommended.
Wire Crimper/Stripper Tool Kit
- Key Features: Strips wire insulation, crimps terminals, cuts wires.
- Average Price: Around $15-$30.
- Pros: Ensures secure and professional connections, makes wiring much easier and safer than makeshift methods.
- Cons: Not essential if using pre-attached fuse taps, but good for cleaner installs or repairs.
Automotive Trim Removal Tool Set
- Key Features: Non-marring plastic tools for safely prying off interior trim panels.
- Average Price: Around $10-$20.
- Pros: Prevents damage to car interior during wire routing, makes tucking wires much easier, professional finish.
- Cons: Not strictly necessary but greatly improves the installation experience and outcome.

Table of Contents

Unpacking the Rexing Hardwire Kit: What It Is and Why You Need It

The Rexing hardwire kit isn’t just an accessory. it’s a must for anyone serious about dash cam functionality. At its core, it’s a power conversion module designed to connect your Rexing dash cam directly to your vehicle’s electrical system, specifically the fuse box. This connection provides a continuous, stable power supply, bypassing the need for the traditional cigarette lighter adapter. The primary benefit of this direct connection is enabling parking surveillance mode, allowing your dash cam to record events even when your car is off. Without a hardwire kit, most dash cams can only record when the engine is running, leaving your vehicle vulnerable when parked.

The Core Functionality of a Rexing Hardwire Kit

A Rexing hardwire kit typically consists of a few key components:

Voltage Converter Module: This unit regulates the 12V or 24V input from your car’s battery down to the 5V required by your dash cam, protecting the device from power fluctuations.
Input Wires: These usually include a constant power B+ wire, an accessory ACC power wire, and a ground wire.
- Constant Power B+: This wire connects to a fuse that is always live, even when the ignition is off. This is crucial for maintaining power to the dash cam for parking mode.
- Accessory Power ACC: This wire connects to a fuse that is only live when the ignition is on or in the accessory position. This tells the dash cam when the car is running versus parked.
- Ground Wire: This wire connects to a metal bolt or screw on the car’s chassis, completing the electrical circuit.
Output Connector: This is the USB Mini-USB or USB-C, depending on the Rexing model connector that plugs directly into your dash cam.

The intelligence of the “smart” Rexing hardwire kit lies in its low voltage cut-off LVC protection.

This feature monitors your car’s battery voltage and will automatically cut power to the dash cam if the battery drops below a certain threshold e.g., 11.8V for a 12V system. This prevents the dash cam from completely draining your car battery, ensuring you can still start your vehicle.

This is a critical safety net, especially for those who park their cars for extended periods.

Why Opt for a Hardwire Installation Over a Cigarette Lighter Plug?

There are several compelling reasons to upgrade from a simple cigarette lighter adapter to a hardwired setup:

24/7 Parking Surveillance: This is arguably the biggest selling point. With a hardwire kit, your Rexing dash cam can monitor your vehicle around the clock. This means if someone bumps your car, attempts a break-in, or even just walks past it with suspicious intent, your dash cam can capture the event. Most kits offer motion detection and G-sensor activated recording in parking mode.
Clean and Professional Aesthetic: No more dangling wires or occupied cigarette lighter sockets. A hardwired installation routes the cables neatly behind interior trim panels, making for a much cleaner and more integrated look. Your cigarette lighter socket remains free for charging phones, GPS devices, or other accessories.
Reliable Power Source: The cigarette lighter socket can sometimes be prone to intermittent power or might only be active when the ignition is on. Hardwiring provides a stable, direct connection to the car’s electrical system, reducing the risk of power interruptions and ensuring consistent operation.
Battery Protection: As mentioned, the built-in low voltage cut-off feature prevents your dash cam from draining your car’s battery. This is a significant advantage, especially if you leave your car parked for days.
Reduced Clutter: Freeing up the cigarette lighter port means less clutter on your dashboard and a more organized interior. This is a small but often appreciated detail.

In essence, a Rexing hardwire kit transforms your dash cam from a simple recording device into a robust security system for your vehicle, providing enhanced peace of mind.

Demystifying the Rexing Hardwire Kit Instructions: A Step-by-Step Guide

Successfully installing a Rexing hardwire kit might seem daunting at first, but with the right instructions and a methodical approach, it’s a manageable DIY project for most car owners. The process involves identifying fuse box locations, tapping into specific fuses, and neatly routing cables. Remember, safety first: always disconnect your car’s negative battery terminal before starting any electrical work.

Navigating the Rexing Hardwire Kit Install Process

The core of the installation revolves around correctly connecting the three wires from the hardwire kit: constant power, accessory power, and ground.

Preparation is Key: Best wifi dash cam front and rear
- Gather Tools: You’ll need your Rexing hardwire kit ensure it has the correct USB type for your dash cam, whether rexing hardwire kit usb c or mini-USB, add-a-circuit fuse taps ensure you have the correct size for your car’s fuses – common types are ATO, Mini, Micro2, Low Profile Mini, a multimeter highly recommended for identifying fuse types, wire strippers/crimpers if needed, zip ties, and an automotive trim removal tool set.
- Locate Your Fuse Box: Most vehicles have an interior fuse box, usually under the dashboard on the driver’s or passenger’s side, or in the glove compartment. Some vehicles also have a fuse box under the hood. Consult your car’s owner’s manual to find the exact location.
- Identify Fuse Types: Use your owner’s manual or a fuse diagram often found on the fuse box cover to understand the function of each fuse. You’ll be looking for one that is constant always on and one that is accessory on with ignition.
Connecting the Ground Wire:
- Locate a metal bolt or screw on the car’s chassis near the fuse box. This needs to be bare metal, not painted, to ensure a good connection.
- Securely attach the ground wire usually black from the hardwire kit to this point. You may need to remove a bolt, slide the spade connector underneath, and re-tighten. A solid ground connection is paramount for proper operation.
Tapping into Constant Power Yellow/Red Wire:
- This wire often yellow or red provides power even when the ignition is off, enabling parking mode.
- Using your multimeter, set it to DC voltage and touch the positive probe to the metal contact points on top of the fuses while the ignition is off. The fuse that shows 12V or close to it is a constant power source. Choose a fuse that powers something non-essential, like the radio, interior lights, or a spare fuse slot. Avoid critical safety systems like airbags or ABS.
- Insert the constant power wire from your hardwire kit into one of the slots of an add-a-circuit fuse tap. Insert the original fuse from the chosen slot into the bottom slot of the fuse tap, and a new fuse of the same rating as the original, or a 2-3A fuse for the dash cam itself into the top slot.
- Plug the fuse tap into the constant power fuse slot you identified in your car’s fuse box.
Tapping into Accessory Power Red/ACC Wire:
- This wire often red or blue receives power only when the ignition is on. This signals to the dash cam when the car is running.
- With the ignition on, use your multimeter to find a fuse that shows 12V. When you turn the ignition off, this fuse should show 0V. Again, choose a non-essential circuit.
- Repeat the add-a-circuit process: insert the accessory power wire into the fuse tap, insert the original fuse and a new dash cam fuse if needed, and plug it into the identified accessory fuse slot.
Testing the Connection:
- Before routing cables, plug in your Rexing dash cam.
- Turn your ignition on: the dash cam should power on and begin recording.
- Turn your ignition off: the dash cam should switch into parking mode if supported and configured after a short delay, or power down if parking mode isn’t enabled or configured.
- If it doesn’t work, recheck all connections, especially the ground, and ensure fuses are seated correctly. Confirm you’ve used the correct constant and accessory fuse slots.

Finding Your Fuse: Rexing Hardwire Kit Fuse Identification and Selection

Selecting the correct fuses in your vehicle’s fuse box is arguably the most critical step for a safe and effective Rexing hardwire kit install. Improper fuse selection can lead to issues ranging from a non-functional dash cam to, in rare cases, electrical problems with your vehicle. This isn’t a “plug and play” situation. it requires a bit of detective work and adherence to best practices.

The Role of Constant and Accessory Fuses

Understanding the difference between constant and accessory power is fundamental:

Constant Power B+: This refers to a circuit that receives power continuously from your car’s battery, even when the ignition is off. It’s like the always-on power outlets in your home. For a dash cam, this provides the juice for parking surveillance, motion detection, and G-sensor triggers when your car is parked. Common circuits that are constant include:
- Radio/Stereo Memory: This circuit keeps your radio presets and clock settings even when the car is off.
- Interior Lights Dome Light: Often remains active for a short period or is always on.
- Hazard Lights: Designed to work without the ignition on.
- OBD-II Port sometimes: While not ideal for tapping directly, the port itself might have a constant fuse.
- Spare/Unused Fuse Slots: If your fuse box has empty slots with constant power, these are often the cleanest option.
Accessory Power ACC: This refers to a circuit that only receives power when your ignition is in the “accessory” position or fully “on.” It’s like a switched light in your home. For a dash cam, this signal tells the camera that the car is running, prompting it to switch from parking mode to continuous recording. Common circuits that are accessory include:
- Cigarette Lighter/12V Power Outlet if it turns off with ignition: A common choice.
- Radio/Stereo Power: The main power for the radio, which turns off with the ignition.
- Wiper Motor: Activated only when the car is on.
- Power Windows if they only work with ignition: Another common choice.
- Heated Seats/Steering Wheel if they only work with ignition.

Tools and Techniques for Accurate Fuse Identification

To correctly identify these fuses, you’ll need a multimeter. This is your best friend for electrical work in a vehicle.

Setting Up the Multimeter:
- Set your multimeter to measure DC Voltage VDC, typically around 20V range.
- Connect the black probe to a known ground point on your vehicle any unpainted metal bolt or chassis point.
Identifying Constant Power B+:
- With your car’s ignition completely OFF and the key removed, carefully touch the red probe of the multimeter to the exposed metal test points on the top of each fuse in your fuse box.
- A fuse that shows approximately 12 volts V is a constant power source. Make a note of its location and function from your owner’s manual or fuse diagram.
Identifying Accessory Power ACC: Dash cam front and rear with parking mode
- Turn your car’s ignition to the “ACC” or “ON” position engine does not need to be running, but it’s fine if it is.
- Again, carefully touch the red probe to the exposed metal test points on the top of each fuse.
- A fuse that shows approximately 12V now, but showed 0V when the ignition was off, is an accessory power source. Make a note of its location and function.
Choosing Wisely:
- Avoid Critical Circuits: Never tap into fuses for safety-critical systems like airbags, ABS brakes, engine control, or fuel pump. These systems are essential for vehicle operation and safety, and any interference could have serious consequences.
- Consider Amperage: The original fuse in the slot should be the same amperage as the one you are adding with the fuse tap. For the dash cam itself, a 2-3 Ampere A fuse is usually sufficient and is often included in the hardwire kit. Always use the lowest necessary amperage to protect your dash cam.
- Use Add-A-Circuit Fuse Taps: These are indispensable. They allow you to add a new circuit for your dash cam without cutting or splicing into existing car wires, preserving the original circuit’s integrity and providing a dedicated fuse for your dash cam. This is far safer and more professional than simply wrapping a wire around a fuse leg.

By carefully following these steps, you can confidently identify and tap into the correct fuses, ensuring your Rexing hardwire kit operates flawlessly and safely.

Powering Up: Rexing Hardwire Kit USB C vs. Mini-USB

When considering a Rexing hardwire kit, one of the crucial distinctions to be aware of is the type of USB connector it uses to connect to your dash cam. Rexing, like many electronics manufacturers, has transitioned from the older Mini-USB standard to the more modern and versatile USB-C. Understanding this difference is key to ensuring compatibility with your specific dash cam model.

Understanding USB Standards for Dash Cams

Mini-USB: For years, Mini-USB was the standard power and data port for many dash cams, including older Rexing models. It’s a trapezoidal-shaped connector, distinct from the larger, more common USB-A. If you have an older Rexing V1, V2, or similar model, it likely uses a Mini-USB port for power. The Rexing Smart Hardwire Kit Mini-USB is designed specifically for these devices.
- Pros: Widely available on older devices, hardwire kits are readily accessible.
- Cons: Can only be inserted one way, slower data transfer speeds though not relevant for power, less robust than USB-C.
USB-C: This is the newer, reversible, and more robust USB standard. It’s gaining widespread adoption across all modern electronics, from smartphones to laptops and, increasingly, dash cams. Newer Rexing models, particularly higher-end and recent releases like the V55 series, often feature a USB-C port for power. The Rexing Smart Hardwire Kit USB-C is tailored for these contemporary models.
- Pros: Reversible connector can be plugged in either way, more durable, supports faster power delivery and data transfer though, again, power delivery is the main concern here.
- Cons: Not compatible with older Mini-USB devices, requires specific USB-C hardwire kits.

Ensuring Compatibility: Why the Correct USB Type Matters

Using the wrong type of hardwire kit is a common pitfall.

If your Rexing dash cam has a Mini-USB port, a USB-C hardwire kit will not physically fit, and vice versa. It’s a simple, yet critical, detail.

Check Your Dash Cam: Before purchasing any hardwire kit, always verify the USB port type on your specific Rexing dash cam model. This information is usually found in your dash cam’s user manual, on the product page, or by simply looking at the port itself.
Model-Specific Kits: Rexing often clearly labels its hardwire kits as either “USB-C” or “Mini-USB.” For instance, if you have a Rexing V55, you’ll need the Rexing hardwire kit type c. If you have an older Rexing V1P Gen 3, you’ll need the Mini-USB version.
Future-Proofing: If you plan on upgrading your dash cam in the future, it’s worth noting that the trend is overwhelmingly towards USB-C. However, for your current dash cam, stick to the matching port type.

The choice between a Rexing hardwire kit USB C and a Mini-USB variant is solely dictated by the dash cam you own. A quick check of your dash cam’s port will ensure you select the correct kit for a seamless installation and reliable power supply.

Where to Get Your Kit: Rexing Hardwire Kit Best Buy and Other Retailers

When you’re ready to purchase a Rexing hardwire kit, knowing where to look can save you time and ensure you get an authentic product. While dedicated dash cam retailers are often the go-to, larger electronics stores and online marketplaces also carry these essential accessories.

Exploring Retail Options for Your Rexing Hardwire Kit

Rexing’s Official Website:
- Pros: This is arguably the most reliable source for genuine Rexing products. You’ll find the complete range of hardwire kits, including both Rexing Smart Hardwire Kit USB-C and Rexing Smart Hardwire Kit Mini-USB, specifically designed for their dash cams. You can often find bundles with dash cams, and you’ll have direct access to customer support if you have compatibility questions.
- Cons: Shipping times might vary, and prices are generally MSRP.
- Recommendation: Always check here first for the most accurate product information and compatibility.
Amazon:

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- Pros: Amazon is a massive marketplace where you’ll find a wide selection of Rexing hardwire kits, often with competitive pricing and fast shipping, especially with Prime. You can read user reviews, compare different sellers, and often find bundled deals with accessories like fuse taps and trim tools. This is where you’ll likely find search results for “rexing smart hardwire kit” or “rexing hardwire kit type c.”
- Cons: While convenient, be mindful of third-party sellers. Always verify the seller’s reputation and ensure you’re buying a genuine Rexing product, not a generic alternative if you specifically want the Rexing branded kit.
- Recommendation: Excellent for competitive prices and quick delivery, but verify the seller.
Best Buy and similar electronics retailers:
- Pros: If you’re looking for a “rexing hardwire kit best buy,” you might be in luck. Large electronics retailers like Best Buy often carry popular dash cam brands and their accessories. The advantage here is the ability to walk into a store, potentially see the product, and get immediate assistance from staff. Some locations might even offer installation services.
- Cons: Selection might be more limited compared to online-only stores or Rexing’s direct site. Prices may be slightly higher than online.
- Recommendation: Great for immediate purchase or if you prefer an in-person shopping experience and potential installation services. Always call ahead to confirm stock.
Specialty Automotive or Car Audio Stores:
- Pros: Stores specializing in car electronics or accessories often stock hardwire kits from various brands. The staff here are usually highly knowledgeable about vehicle electrical systems and can offer excellent advice on installation and fuse selection.
- Cons: May not always carry the full Rexing line, and prices might be higher.
- Recommendation: Good for expert advice and if you need specific fuse taps or tools that aren’t readily available elsewhere.
Online Automotive Parts Retailers:
- Pros: Websites like Crutchfield, while known for car audio, also carry dash cams and installation accessories. They often have very detailed product descriptions and excellent customer support for installation queries.
- Cons: Focus might be broader than just Rexing, so specific product searches might require more effort.
- Recommendation: Another reliable online source for quality automotive electronics.

No matter where you choose to purchase, always double-check the compatibility of the hardwire kit with your specific Rexing dash cam model, paying close attention to the USB connector type rexing hardwire kit usb c vs. Mini-USB.

Professional Assistance: Rexing Hardwire Kit Near Me and Installation Services

While installing a Rexing hardwire kit is a popular DIY project, not everyone feels comfortable tackling automotive electrical work. For those who prefer professional assistance, finding a reliable installer for a “rexing hardwire kit near me” is a sensible choice. Professional installation ensures safety, proper wiring, and often comes with a warranty on the labor.

Locating a Professional Installer for Your Dash Cam

Several types of businesses offer dash cam hardwiring services:

Car Audio & Alarm Shops:
- Why them? These shops are specialists in vehicle electronics. They routinely install aftermarket stereos, amplifiers, alarm systems, and remote starters, all of which involve meticulous wiring to the fuse box. They have the tools, expertise, and experience with various vehicle makes and models.
- What to expect: They will neatly route the cables, correctly identify constant and accessory power sources, and ensure the low voltage cut-off functions as intended. Many will also offer a warranty on their installation work.
- How to find: Search for “car audio installation near me,” “car alarm installation near me,” or “vehicle electronics specialist.”
Best Buy Geek Squad or Other Large Electronics Retailers:
- Why them? As mentioned earlier, some large retailers that sell dash cams, like Best Buy, also offer installation services through their in-house technical support teams e.g., Geek Squad. This can be a convenient one-stop shop if you buy your dash cam and kit from them.
- What to expect: They offer standardized installation packages. It’s crucial to confirm they are comfortable with hardwiring for parking mode, as some basic installations might only power via the cigarette lighter. Ask specific questions about their hardwiring process.
- How to find: Check their website or inquire in-store about “dash cam installation services.”
Local Independent Auto Repair Shops with electrical expertise:
- Why them? Some general auto repair shops have technicians with strong electrical diagnostic skills. If they regularly handle vehicle electrical issues, they might be capable of a dash cam hardwire installation.
- What to expect: Quality can vary more here, so it’s essential to verify their experience with aftermarket electronics. Ask for references or photos of previous work.
- How to find: Call local mechanics and specifically ask if they offer “aftermarket accessory installation” or “dash cam hardwiring.”
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- Why them? A growing number of services offer to come to your home or workplace to install automotive accessories. This offers unparalleled convenience.
- What to expect: They bring all necessary tools and expertise to your location. Ensure they are reputable and insured.
- How to find: Search for “mobile dash cam installation” or “mobile auto electronics installation.”

Key Questions to Ask a Potential Installer

Before committing to a service, make sure to ask:

“Have you installed Rexing hardwire kits or similar dash cam hardwire kits before?” Experience with similar products is a good indicator.
“Do you guarantee the wiring will be neatly hidden?” A professional installation should always aim for a clean, factory-like finish.
“What is your warranty on the installation labor?” A reputable shop will stand behind their work.
“What is the estimated time and cost?” Get a clear quote upfront.
“Do you have experience with my specific car make/model?” Some vehicles have more complex fuse box layouts or interior trim.

While a DIY approach to your Rexing hardwire kit installation can be rewarding, opting for professional help ensures peace of mind, especially if you’re not comfortable with electrical work.

Beyond the Basics: Rexing Hardwire Kit DT2 and Smart Features

The evolution of dash cam technology isn’t just about clearer video. it’s also about smarter power management and enhanced security features. The Rexing hardwire kit DT2 and other “smart” hardwire kits from Rexing exemplify this trend, offering advanced functionalities that go beyond simple continuous power. These kits integrate intelligent low voltage protection and precise parking mode triggering, making your dash cam a truly autonomous surveillance system for your vehicle.

Diving Deeper into “Smart” Hardwire Kit Capabilities

A “smart” hardwire kit like the Rexing DT2 variant or the standard smart hardwire kit from Rexing isn’t just a power adapter. it’s a dedicated power management unit.

Its intelligence primarily revolves around these features:

Low Voltage Protection LVP:
- How it works: This is the cornerstone of a smart hardwire kit. The module constantly monitors your car’s battery voltage. If the voltage drops below a user-defined or pre-set threshold e.g., 11.8V for a 12V car battery, or 23.5V for a 24V truck battery, the kit automatically cuts power to the dash cam.
- Why it’s crucial: This prevents your dash cam from completely draining your car battery, ensuring you can always start your vehicle. Without this, leaving your dash cam on for extended periods in parking mode could leave you stranded with a dead battery.
- Customization: Some advanced kits allow you to adjust the LVP threshold, giving you more control over how long your dash cam can run in parking mode before shutting off.
ACC Accessory Detection for Parking Mode:
- How it works: The smart hardwire kit uses the ACC wire connection to detect whether your vehicle’s ignition is on or off. When the ACC power drops meaning the ignition is off, the kit signals the dash cam to transition into parking mode. When ACC power returns, the dash cam switches back to continuous recording.
- Benefits: This automated transition is seamless and ensures your dash cam is always in the correct recording mode, whether you’re driving or parked. It eliminates the need for manual intervention.
Configurable Parking Mode Options:
- While the hardwire kit provides the power, the dash cam itself determines the specific parking mode features. Smart kits enable these advanced features within the dash cam. Common parking mode options include:
  - Motion Detection: Records when movement is detected in the camera’s field of view.
  - G-Sensor Impact Detection: Records when an impact or sudden jolt is detected e.g., someone bumping your car.
  - Time-Lapse Recording: Records continuously at a very low frame rate e.g., 1 frame per second to save storage space, then speeds up playback to review long periods quickly.
  - Buffered Recording: Some dash cams can record a few seconds before and after an event motion or impact, providing more context.

The DT2 and What it Means for Rexing Users

The “DT2” designation often refers to a specific model or version of Rexing’s hardwire kit, likely indicating an iteration with improved features or a specific USB connector type like a Rexing hardwire kit type c. While the core functionality of all Rexing smart hardwire kits revolves around providing consistent power with LVP, specific models might offer:

Enhanced Compatibility: Designed for newer Rexing dash cam models, ensuring optimal performance.
Improved Durability: Potentially more robust wiring or housing for longevity.
Specific Voltage Settings: Calibrated for precise low voltage cut-off points.

Investing in a smart hardwire kit, whether it’s the standard Rexing offering or a specific model like the DT2, transforms your dash cam into a more reliable and intelligent guardian for your vehicle, especially when parked. Best rear and front dash cam

It’s a crucial component for maximizing your dash cam’s security potential.

Troubleshooting Common Issues with Your Rexing Hardwire Kit

Even with careful installation, occasionally issues can arise with a Rexing hardwire kit. When your dash cam isn’t behaving as expected after hardwiring, a systematic approach to troubleshooting can help pinpoint the problem. Remember, always prioritize safety and disconnect your car’s negative battery terminal before manipulating wires in the fuse box.

Diagnosing Dash Cam Hardwire Kit Problems

Here are some common issues and their potential solutions:

Dash Cam Doesn’t Power On at All:
- Check Fuses: This is the first and most common culprit.
  - In the Fuse Tap: Ensure both fuses in your add-a-circuit fuse taps are properly seated and intact. The fuse closest to the wire going to the dash cam protects the dash cam circuit, and the other protects the original car circuit.
  - In Your Car’s Fuse Box: Verify that the original fuse you tapped into before adding the tap isn’t blown.
  - Solution: Replace any blown fuses with a new one of the exact same amperage.
- Ground Connection: A loose or improper ground connection is another frequent cause of no power.
  - Check: Ensure the ground wire usually black is securely attached to a clean, unpainted metal surface on the car’s chassis. Wiggle it to test.
  - Solution: Re-secure the ground wire. If the connection point is painted, scrape away a small area of paint to expose bare metal.
- Hardwire Kit Connection to Dash Cam:
  - Check: Is the Mini-USB or Rexing hardwire kit USB C connector fully inserted into the dash cam’s power port?
  - Solution: Re-seat the connection firmly.
- Verify Power at the Fuse Box with Multimeter:
  - Check: Using a multimeter, test for 12V at the constant and accessory fuse tap points with ignition off for constant, on for accessory. If there’s no voltage, you might have selected the wrong fuse or there’s an issue with your car’s electrical system less common, but possible.
  - Solution: Re-read your car’s fuse diagram and use the multimeter to identify correct constant and accessory fuses.
Dash Cam Works While Driving, But Not in Parking Mode Doesn’t Stay On When Car is Off:
- Incorrect Constant Power Fuse: This is almost always the issue.
  - Check: The yellow or red wire from your hardwire kit must be connected to a fuse that is always live, even with the ignition off. If it’s connected to an accessory fuse, the dash cam will power down with the ignition.
  - Solution: Use your multimeter to re-identify a true constant power fuse in your fuse box shows 12V with ignition off. Relocate the constant power wire to this fuse.
- Dash Cam Settings: Sometimes, the dash cam itself needs to be configured for parking mode.
  - Check: Go into your Rexing dash cam’s settings menu and ensure “Parking Mode” or “Motion Detection” is enabled and correctly configured.
  - Solution: Adjust dash cam settings as per its user manual.
Dash Cam Drains Car Battery:
- Low Voltage Cut-Off Not Working or Not Present: If your hardwire kit doesn’t have a low voltage cut-off LVC feature, or if it’s malfunctioning, the dash cam will continue to draw power until the battery is flat.
  - Check: Confirm your Rexing hardwire kit is a “smart” kit with LVC. If it is, and this is happening, it might be faulty.
  - Solution: If using a basic kit, replace it with a Rexing Smart Hardwire Kit. If your smart kit is faulty, contact Rexing support for a replacement.
- LVC Threshold Set Too Low: Some smart kits allow you to adjust the LVC. If set too low, it might not cut power soon enough.
  - Check: Refer to your hardwire kit’s manual to see if the LVC threshold is adjustable and its current setting.
  - Solution: Increase the LVC threshold e.g., from 11.6V to 11.8V for a 12V battery.
Dash Cam Turns Off/On Intermittently:
- Loose Connections: Any loose wire connections, especially the ground or at the fuse taps, can cause intermittent power.
  - Check: Firmly re-seat all fuse taps and ensure the ground wire is secure.
  - Solution: Tighten connections.
- Faulty Hardwire Kit: While rare, the hardwire kit itself could be defective.
  - Check: If all connections are solid and fuses are good, and the problem persists, the kit itself might be the issue.
  - Solution: Contact Rexing support for troubleshooting or a replacement.

By systematically going through these troubleshooting steps, you can resolve most common issues encountered after installing your Rexing hardwire kit, ensuring your dash cam provides continuous, reliable surveillance.

Frequently Asked Questions

What is a Rexing hardwire kit?

A Rexing hardwire kit is an electrical accessory designed to connect your Rexing dash cam directly to your vehicle’s fuse box, providing a continuous and stable power supply for features like 24/7 parking surveillance.

What does a Rexing hardwire kit do?

It enables your dash cam to receive constant power even when the vehicle is off, allowing for parking mode recording motion detection, G-sensor events, and often includes low voltage cut-off protection to prevent car battery drain. Small dash cam front and rear

Are Rexing hardwire kits universal?

No, Rexing hardwire kits are not universally compatible across all dash cams.

They are specifically designed for Rexing dash cams and come with either a Mini-USB or USB-C connector to match the dash cam’s input port.

How do I install a Rexing hardwire kit?

Installation involves connecting three wires constant power, accessory power, and ground to your vehicle’s fuse box using add-a-circuit fuse taps and a ground point, then routing the cable to your dash cam.

Always consult your vehicle and hardwire kit manuals.

What tools do I need to install a Rexing hardwire kit?

You’ll typically need the hardwire kit itself, add-a-circuit fuse taps correct size for your car, a digital multimeter for identifying fuses, wire strippers/crimpers, and automotive trim removal tools.

What is the difference between Rexing hardwire kit USB C and Mini-USB?

The difference is the type of connector that plugs into the dash cam.

USB-C is a newer, reversible standard used by modern Rexing dash cams, while Mini-USB is an older standard found on previous Rexing models.

You must choose the kit that matches your dash cam’s port.

Can a Rexing hardwire kit drain my car battery?

A “smart” Rexing hardwire kit includes a low voltage cut-off LVC feature that automatically stops drawing power when your car battery reaches a certain voltage, preventing it from draining completely.

However, if using a non-smart kit or if the LVC is faulty, battery drain is possible. Best car dashcams

Where can I buy a Rexing hardwire kit?

You can purchase a Rexing hardwire kit directly from Rexing’s official website, major online retailers like Amazon, large electronics stores like Best Buy, or specialty car audio and automotive accessory shops.

How much does a Rexing hardwire kit cost?

A Rexing hardwire kit typically costs between $30 and $50, depending on the specific model and retailer.

Can I install the Rexing hardwire kit myself?

Yes, many users successfully install the Rexing hardwire kit themselves with basic tools and some patience.

However, it requires basic understanding of automotive electrical systems.

Where can I find Rexing hardwire kit instructions?

Detailed installation instructions are usually included in the packaging of your Rexing hardwire kit and are often available as PDFs or video tutorials on the Rexing USA website.

What if my Rexing dash cam doesn’t go into parking mode after hardwiring?

This usually indicates an issue with the constant power connection.

Ensure the wire connected to your constant fuse always live is correctly identified and securely connected using your multimeter.

How do I find a Rexing hardwire kit installer near me?

You can search online for “car audio installation near me,” “dash cam installation,” or “vehicle electronics specialist.” Major electronics retailers like Best Buy often offer installation services as well.

What fuse should I use for my Rexing hardwire kit?

You’ll need to tap into two fuses: one that is constant always on, for parking mode and one that is accessory only on with ignition, for driving mode detection. Use a multimeter to identify appropriate, non-essential circuits in your car’s fuse box. Security cameras for trucks

Does the Rexing hardwire kit work with 24V vehicles?

Yes, most Rexing hardwire kits are designed to work with both 12V and 24V vehicle electrical systems, automatically adjusting the output voltage to 5V for the dash cam. Always check the kit’s specifications.

Can I use a Rexing hardwire kit with other dash cam brands?

While physically possible if the USB connector type matches, it’s generally recommended to use hardwire kits specifically designed for your dash cam brand to ensure optimal compatibility and proper functionality of features like low voltage cut-off.

What is low voltage cut-off LVC in a Rexing hardwire kit?

LVC is a safety feature that monitors your car’s battery voltage and automatically cuts power to the dash cam if the battery drops below a safe threshold, preventing the dash cam from completely discharging your car battery.

How long can my Rexing dash cam record in parking mode with a hardwire kit?

The duration depends on your car battery’s health, its capacity, the dash cam’s power consumption, and the hardwire kit’s low voltage cut-off setting. It can range from a few hours to several days.

What is the Rexing hardwire kit DT2?

The “DT2” likely refers to a specific model or version of the Rexing hardwire kit, possibly an updated design or one tailored for particular dash cam models, offering enhanced features or compatibility.

Should I get a professional to install my Rexing hardwire kit?

If you are uncomfortable working with your car’s electrical system, lack the necessary tools, or prefer a guaranteed professional finish, hiring a professional installer is highly recommended for peace of mind.

Rexing hardwire kit