Blackvue Extension Cable

[Cora Auch]

Videocables for dashcams come in a variety of uses. Available include extension cables to connect the rear camera of the dashcam to the front dashcam. The cables that come standard with 2CH Dual dashcams are usually 6 meters, which may be just too short if you want to use the dashcam in a camper or van. Other video cables for dashcams include HDMI cables. With an HDMI cable you can connect the dashcam to a TV or other monitor and view the images directly on it.

Disclaimer: I consider myself a reasonably skilled handyman. This installation requires some manual skills, as well as basic knowledge of low-voltage electrical systems. If you are worried about damaging your car or harming yourself in the process, you are better off hiring a professional to do the installation for you. I take no responsibility for any of the mishaps along the way, so proceed at your own risk and with caution!

Before you begin, make sure your work area is well lit and ventilated (there might be some sweat involved). You might also want to secure some soft rags/towels to protect your upholstery and body panels when moving around the car, especially where the fish tape could come in contact with the painted surface. Thank me later.

2. Connect the 4-pin fan power extension cable to the in-car auxiliary connector and using multi-meter find a pair of wires providing at least 12 V DC. In my case, it was a black/yellow pair and the reading on multi-meter has confirmed 14 V DC:

4. Repeat the same procedure to fish the coaxial cable for the rear camera through. I would highly recommend that you use the 90-degree angled end at the front of the car. This insures you have the straight end of the cable to feed through the boot/tube at the back. It is much easier to feed a straight-end connector than the right-angle connector through the tight areas such as the boot. The right-angled connector also looks cooler when attached to the front camera.

17. Run the fishing tape through the tailgate. Start at the location where the grommet attaches to the tailgate (marked with an arrow pointing up on the picture below) and finish out through the hole where the handle was:

Are you wondering why this could not be accomplished by just using the fishing rod instead? Simply because it is not flexible enough when being pushed through (as compared to steel tape which has a flat profile and can be easily twisted and turn it to adjust the angle). Pulling the fishing rod is easy in comparison. The whole point was to avoid removing the large trim piece, remember?

Basically, we are running the cable through the rubber tubing, continuing through metal part of the tailgate and underneath the large piece of the trim without drilling additional holes in the aluminium panel or unnecessary disassembly.

22. Connect the coaxial cable to the rear camera. Mount the unit in the bracket and center its lens (along vertical axis) on the rear window. Restore the power to the front camera (this will also provide the power to the rear). Now you can use the phone app to preview the image.

In Tesla Model S 100D from March 2018 the in-car auxiliary connector is connected to a module (in intrusion detection module?). The voltage measured on all the pins is different. This is also mention buy another person in another forum two weeks ago. What do other people measure in new cars from 2018?

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