Install Hualingan on e39/e53 DIY

[Philly X5]

Originally Posted by fmugur

Depending on your camera. They come with 4 or 3 wires (the ground is common). The HU needs +12 to the wire labeled "back" to switch the input to the camera. Do not use the video input for the backup camera, use the right RCA connector.
If the camera is not powered or there is no signal on that input you will get a message on the screen about that.
If you don't send +12v to the "back" wire your HU will not switch the input.

Thanks for responding.
I found out yesterday about 12V to the unit from carsolutionsdude forum...
What "right"RCA are you talking about - I dont think I have one...I have several inputs for RCA audio, one input that says "Video In Back" and thats the one I used for the camera.