Quote:
Originally Posted by PS-RagE
Factory Backup Camera
For the navigation system, it is pins 21 to 24 on connecter K7
K7 looks like this:
Pin 21 is the camera’s ground.
Pin 24 is supply voltage for camera
Pin 22 is the positive lead for the video signal
Pin 23 is the negative lead for the video signal
For all other models, again you need to use the connecter for the backup monitor.
White brings ground to the camera
Black brings supply voltage to the camera
Red is video positive
Grey is video negative
I hadn’t thought of it at the time when I did my installation, but power and ground must be on this connecter. The wires left over are blue and violet. Anyone want to take their roof console down to measure out the lines?
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This is great and very valuable thread. Thanks for starting it, PS-RagE
I followed the above wiring scheme for dropping the video signals down from the overhead console to the K7 Mic connector on my retrofit OEM Nav unit. I was unable to get the camera to initialize or show video. I rewired new pins into the K7 connector thinking there was an issue there but no dice. The camera had been working fine previously with the smaller overhead monitor.
After replacing all my K7 pins and running test leads from front to rear of the Tundra I finally determined that my Toyota dealer pulled the black wire from the vehicle-side rear view camera harness under the bumper (!!!). I took it in to the dealer for the new tailgate right before starting this project and some fender-bender body work and hadn't noticed the backup monitor problem. I extracted the broken wire's pin from the connector and replaced it with a spare I pulled from a tailight harness I had left over from the body work. Woola. It now works exactly as Ps-RagE described (along with gbbuilders who posted the OEM Nav DIY thread).
I edited this post because in the original I had come up with a workaround that was technically incorrect where the camera negative video was tied into the camera ground. It kinda worked but not well and that's what led me to find the real culprit under the rear bumper.
Once again I've seen where I'd rather not have my Toyota dealer touch my truck as it causes more grief than good.