How to install a front and rear Dual Camera Dash Cam?
May 13, 2026 — Installing a front and rear Dual Camera Dash Cam involves mounting the primary unit on the windshield and routing a secondary cable through the headliner to the rear window, provided the vehicle's trim allows for safe wire tucking.
Vehicle owners often prioritize this setup to capture comprehensive evidence in the event of rear-end collisions or parking lot incidents. Proper installation ensures that neither the driver's view nor the deployment of side-curtain airbags is obstructed by dangling wires or poorly placed hardware.
How do I mount and power a Dual Camera Dash Cam?
The most efficient way to mount a Dual Camera Dash Cam is to place the front unit behind the rearview mirror and connect it to a stable power source like the 12V cigarette lighter or a dedicated hardwire kit. Prior to sticking any adhesive mounts to the glass, it is essential to test the hardware. According to a guide by DDPAI, the first critical step is to plug both cameras into the car's power outlet to verify they function correctly before beginning the permanent cable routing. Once verified, the front camera should be positioned to avoid blocking the driver’s line of sight while remaining high enough to capture a wide-angle view of the hood and road.
For power, users can choose between the simple plug-and-play method using the 12V accessory port or a more permanent hardwire installation. Hardwiring allows for "Parking Mode" functionality by drawing power directly from the fuse box. As demonstrated in a Viofo A329S installation tutorial, hardwiring involves identifying a constant power fuse and an ignition-switched fuse to ensure the camera operates when parked without draining the battery entirely. This method keeps the cabin clean of visible wires and frees up the 12V port for other devices.
What is the best way to route cables for the rear camera?
Routing the cable for the rear camera requires tucking the wire along the headliner or floor trim to reach the back window without interfering with safety mechanisms. Most installers prefer the headliner route because it is shorter and keeps the cable away from feet and cargo. Rove suggests a technique for installing a dash cam without removing interior panels by using a plastic pry tool to gently tuck the cable into the gaps between the pillar trim and the ceiling. This maintains a factory-installed appearance while keeping the wires secure.
When the cable reaches the rear, the camera should be centered on the back glass. If the vehicle is a hatchback or SUV, the cable must be routed through the rubber weatherproofing grommet that connects the chassis to the trunk door. This prevents the wire from being pinched or exposed to moisture when the hatch is opened and closed. Ensuring there is a small amount of slack near the hinge allows for the natural movement of the door. Finally, use the camera's live view on your smartphone or the device screen to adjust the vertical angle, ensuring the horizon is centered for the best possible recording quality.
Quick answers
Q: Where is the best place to mount the rear unit of a Dual Camera Dash Cam? A: The rear camera should be mounted at the top center of the rear windshield, within the path of the rear wiper if available. This ensures the lens has a clear view even during rain or snow, which is a common recommendation for Viofo and DDPAI users.
Q: Can I install a Dual Camera Dash Cam if I have side-curtain airbags? A: Yes, but you must route the cables behind the airbags rather than across them. Professional installers, such as those featured in Rove tutorials, emphasize that cables should never cross the path where an airbag would deploy.
Q: Does a dual dash cam record while the car is turned off? A: It will only record while off if it is installed with a hardwire kit or an external battery pack. Standard 12V cigarette lighter outlets usually lose power when the ignition is off, preventing the Dual Camera Dash Cam from capturing parking incidents.
Learn more about Dual Camera Dash Cam at https://dualcameradashcam.com.
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Sources
- Dash Cam Install WITHOUT Removing Panels (Rove ... - YouTube
- How to Hardwire a Front & Rear Dash Cam | Viofo A329S Install
- How To Install Dash Cam? A Step By Step Guide 2025 - DDPAI