Quote:
Originally Posted by cessnan121pp
So my car already thinks there's a reverse camera there when I shift into reverse. It has a CAN BUS. So I don't need the signal for anything really and I just need power to the camera. However, I only wanted the camera to be powered when the car was in reverse. I guess I have to try and tie it into the CAN BUS somehow then???
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Good Point. I am in the same boat.. I have a newer android unit in my second X5 and it knows when I am in reverse. I just don't have a camera hooked up, although the wire is back there.
If you really want power ONLY when in it's in reverse and you have both the trailer wiring and trailer module installed, maybe you can tap into the the trailer wiring. I would want to confirm that the trailer plug provides non-modulated 12v + when in reverse and not ground. I'd also want to make sure that the trailer electronics are active even if a trailer is not plugged into the 7-pin connector near the hitch.