You have just purchased a Rexing dash cam, one of the most reliable tools for protecting yourself on the road. Whether you are a daily commuter, a rideshare driver, or a road trip enthusiast, a properly installed dash cam is your silent witness in the event of an accident, a traffic dispute, or even a random act of vandalism. However, the box contains wires, suction cups, and adhesive mounts that can feel overwhelming if you have never installed one before. The good news is that with the right guidance, you can complete this installation in under an hour and achieve a professional, clean look that does not clutter your windshield or drain your car battery.
This guide is designed for 2026, taking into account the latest Rexing models, modern vehicle electronics, and best practices for hardwiring. We will walk you through every step, from choosing the perfect mounting location to hiding cables behind your headliner. By the end of this article, you will have a fully functional dash cam that records your drives seamlessly, giving you peace of mind every time you turn the key.
Pre-Installation: Choosing the Right Location and Gathering Tools
Before you touch a single wire, you must decide where to mount your Rexing dash cam. ideal location is behind the rearview mirror, on the passenger side of the windshield. This position keeps the camera out of your direct line of sight, ensuring it does not obstruct your view of the road. It also places the lens near the center of the windshield, providing the widest and most balanced field of view. For Rexing models with a rear camera, you will also need to plan a route for the cable to run along the headliner and down to the rear window or license plate area.
Next, gather your tools. Most Rexing dash cams come with a trim removal tool, a power cable, and a mounting bracket. You will also need a microfiber cloth and isopropyl alcohol to clean the glass, a plastic pry tool for tucking wires, and a fuse tap kit if you plan to hardwire the camera for parking mode. For 2026 models, Rexing has improved its adhesive pads, but you should still ensure the windshield temperature is above 50 degrees Fahrenheit for the best bond. If you are installing in cold weather, use a hairdryer on low heat to warm the glass and the adhesive pad.
Finally, perform a dry fit. Hold the camera in your chosen location and check that the lens has a clear view of the road without being blocked by the rearview mirror or the windshield's black frit dots. Adjust the angle so the camera points slightly downward to capture both the road and the hood of your car. Once you are satisfied, clean the glass area thoroughly with the alcohol wipe and let it dry completely. This step is critical; any dust or oil will cause the adhesive to fail, potentially sending your dash cam crashing onto the dashboard.
Mounting the Camera and Routing the Power Cable
With the glass clean and dry, peel the protective film off the adhesive mount and press it firmly against the windshield. Hold it in place for 30 seconds to ensure a strong bond. Most Rexing mounts use a sliding mechanism; attach the camera body to the mount until you hear a click. Do not fully tighten the adjustment screws yet, as you will need to fine-tune the angle after the cable is routed. For models with a GPS mount, ensure the metal contacts are aligned properly to maintain power and data connectivity.
Now, it is time to route the power cable. The goal is to hide the wire completely so it does not dangle or distract you. Start by plugging the USB or 12V power adapter into the camera. Then, use your plastic pry tool to gently tuck the cable into the gap between the windshield and the headliner. Work your way along the top edge of the windshield toward the driver's side A-pillar. For most vehicles, the headliner is flexible enough to accept the cable without any tools, but you may need the pry tool to push the wire deeper into the gap.
When you reach the A-pillar, you have a choice. You can either run the cable behind the A-pillar trim (which requires removing the trim panel) or simply tuck it along the rubber weatherstripping. For a 2026 installation, we recommend the weatherstripping method for most users, as it is non-invasive and does not risk interfering with side curtain airbags. Continue routing the cable down the side of the dashboard, tucking it under the box or along the center console, until you reach your power source: the 12V cigarette lighter port or your fuse box.
Powering Your Dash Cam: Cigarette Lighter vs. Hardwiring
The simplest way to power your Rexing dash cam is to plug the included 12V adapter into your car's cigarette lighter port. This method is plug-and-play and works perfectly for most drivers. Simply plug the adapter in, route the remaining cable slack, and you are done. However, this leaves a visible plug in your port and may prevent you from using it for other devices. For a cleaner look, you can use a short right-angle USB adapter to reduce the profile of the plug.
For those who want 24/7 parking surveillance, hardwiring is the superior choice in 2026. Rexing offers a hardwiring kit that connects directly to your vehicle's fuse box. This allows the dash cam to draw power even when the engine is off, using a low-voltage cutoff to prevent your car battery from draining. To hardwire, locate your fuse box (usually under the dashboard or in the engine bay) and use a fuse tap to connect the hardwire kit's red wire to a constant fuse and the yellow wire to a switched fuse. The black wire connects to a metal ground point, such as a bolt on the chassis.
If you are not comfortable working with car electronics, we strongly recommend professional installation for hardwiring. However, if you are handy, the process is straightforward. Use a multimeter to test which fuses are always on and which are only on when the ignition is on. Once connected, tuck the hardwire kit's box into a cavity behind the fuse panel and route the cable to the camera. The result is a completely hidden installation no dangling wires and the ability to record while your car is parked.
Installing the Rear Camera (For Dual-Channel Models)
If you purchased a Rexing dual-channel dash cam, such as the V1P or V3, you will need to install the rear camera. The rear camera connects to the main unit via a long RCA or coaxial cable. Start by mounting the rear camera on the rear windshield, ideally at the top center for the best view. Clean the glass thoroughly and attach the adhesive mount. For vehicles with a rear wiper or defroster lines, avoid placing the adhesive directly over the defroster grid, as this can weaken the bond.
Routing the rear camera cable is the most challenging part of the installation. You will need to run the cable from the front camera, along the headliner, down the A-pillar, and then along the door sills or floor trim to the back of the car. Use your plastic pry tool to lift the rubber door seals and tuck the cable underneath. For hatchbacks and SUVs, you can often route the cable through the existing rubber conduit that connects the car body to the tailgate. This requires some patience and a gentle hand to avoid pinching the wire.
Once the cable reaches the rear, connect it to the rear camera and test the feed on the front unit. Adjust the rear camera's angle so it captures traffic behind you without excessive sky or bumper. Secure any excess cable with zip ties or adhesive clips to prevent rattling. A properly installed rear camera gives you a complete 360-degree view of your vehicle, which is invaluable for capturing rear-end collisions or parking lot incidents.
Final Setup, Testing, and Maintenance Tips for 2026
With all cables routed and the cameras mounted, it is time to power on the system. Start your car and check that the dash cam boots up automatically. For Rexing models, you should see a blue LED indicator light and hear a startup chime. Navigate through the settings menu to set the date, time, and video resolution. In 2026, we recommend setting the resolution to 1440p or 4K if your model supports it, and enabling loop recording to overwrite old footage automatically. Also, enable the G-sensor to lock recordings during impact events.
Perform a road test to verify the camera angle. Drive for a few minutes and then review the footage on the camera's screen or by connecting the SD card to your computer. The horizon should be level, and the license plates of cars in front of you should be readable. If the image is too bright or too dark, adjust the exposure settings in the menu. For parking mode, test that the camera enters low-power recording mode after the car is turned off and that it wakes up immediately when motion is detected.
Finally, establish a maintenance routine. Format your SD card every two weeks to prevent file corruption, and clean the lens with a microfiber cloth monthly. In 2026, many Rexing models support Wi-Fi connectivity, allowing you to download footage directly to your phone. Familiarize yourself with the app, as it can save you from having to remove the SD card. With proper installation and care, youring dash cam will provide reliable service for years, protecting you from false claims and capturing memorable road trips.
Frequently Asked Questions
I install a Rexing dash cam in a car with a rain sensor or advanced driver-assistance systems (ADAS)?
Yes, you can. The key is to mount the dash cam slightly lower or to the side of the rain sensor housing. Most Rexing cameras are compact enough to fit in the gap between the sensor and the rear mirror. Be careful not to block any ADAS cameras that are integrated into the windshield. If your car has a large sensor cluster, consider mounting the dash cam on the passenger side of the mirror to avoid interference.
How do I hardwire my Rexing dash cam without draining my car battery?
Use the official Rexing hardwiring kit, which includes a low-voltage cutoff feature. This device monitors your battery voltage and automatically shuts off the dash cam when the voltage drops below a safe level (usually 11.8V or 12.0V). Connect the red wire to a constant fuse for parking mode, and the yellow wire to a switched fuse for driving mode. This setup ensures your camera records while parked but stops before your battery is too weak to start the engine.
What size SD card should I use, and how do I format it?
Rexing dash cams support SD cards up to 256GB or 512GB, depending on the model. We recommend a high-endurance card from a reputable brand like SanDisk or Samsung, as these are designed for constant read/write cycles. To format the card, insert it into the dash cam, go to the settings menu, and select the Format option. Do not format the card on your computer, as this can create file system conflicts. Format the card every two weeks to prevent errors.
My dash cam keeps turning off or restarting. What should I do?
A This is usually a power issue. First, check that the 12V adapter is fully inserted into the cigarette lighter port. If you are using a USB port in your car, note that some USB ports do not provide enough amperage for dash cams. Switch to the included 12V adapter. If the problem persists, try a different SD card, as a failing card can cause the camera to reboot. Finally, inspect the power cable for any kinks or damage, and replace it if necessary.
How do I remove the dash cam without damaging my windshield or the adhesive?
To remove the mount, use a piece of dental floss or fishing line. Gently saw the line between the adhesive pad and the glass to break the bond. Do not pull the mount directly, as this can crack the windshield or leave residue. Once the mount is off, use a plastic razor blade and isopropyl alcohol to remove any adhesive. For the rear camera, the same method applies. If you plan to reuse the mount, you will need to purchase a new adhesive pad from Rexing.
Conclusion
Installing a Rexing dash cam in 2026 is a straightforward project that anyone can complete with a little patience and the right tools. From choosing the perfect mounting spot to routing cables like a professional, each step brings you closer to a safer and more documented driving experience. Whether you opt for the simple cigarette lighter plug or the advanced hardwiring setup for parking mode, the result is a reliable device that records every mile. Remember to test your angles, format your SD card regularly, and keep the lens clean for the best video quality.
Now that you have the knowledge, it is time to take action. Gather your tools, clear your schedule for an hour, and install your Rexing dash cam today. The peace of mind you gain is invaluable, especially in an era where dash cam footage is increasingly used by insurance companies and law enforcement. Do not let another drive go unrecorded. Your future self will thank you when you have clear, irrefutable evidence of exactly what happened on the road.
Tony Kilmer is an auto mechanic and the author behind CarTruckAdvisor.com. He shares practical, no-nonsense guidance on car and truck maintenance, common problems, and repair decisions—helping drivers understand what’s going on and what to do next.
