Quote:
Originally Posted by Sjonnie
You do not need the red wire to be connected. As long as you have connected the power wire (the black one IIRC) from the camera to the the wires on your reverse light you will be fine.
Just tape the red wire at the HU and at the camera and all should work as supposed 
HTH |
Nope, you don't have to use the red wire both ends as it is spliced into the psu plug loom.
Doesn't always work reliably though!
As previously stated this can be done at the head unit end if you can find the brown/green wire in the loom, it usually found with a small black five pin connector with other wires in it.
Or you can do as previously mentioned if you can't locate that cable.
Sometimes it can be buried right at the bottom of the centre console and is hard to find, hence the use the red trace wire from front to rear as it is already there
Sometimes the return 12 volt from the psu plug doesn't always make a good contact through to the red wire due to the very thin cable.
It is why I always try and override it by using the brown/green in the dash instead !