I just finished installing my own version of the trailer camera. From the rear of my trailer, I ran Siamese cable, which is a RG6 cable and 18AWG power wires molded together. Siamese cable is commonly used in CCTV applications. The camera I used is a custom build. I took an inexpensive rear view camera and gutted it to get the housing. Then I installed a camera module that is 1080p with a Sony backlit sensor. The trailer connector was taken from a Ford trailer harness that I bought. The trailer side connector is the exact mate to the bumper connector on the truck. I think the picture will show that this camera setup is far superior to the junk that RAM supplies for over 500 bucks. Of course, this is a picture of a picture, so it is far better in real life.
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