I am trying to install a pioneer bc4, I tried hooking it up to the reverse light on both ground and on positive and it does not work when I go in reverse. It does show up whe I select rear view though.. Any ideas?

Have another look at the install directions. What wires are you connecting and where are you connecting them?

Have another look at the install directions. What wires are you connecting and where are you connecting them?

The install directions are lame, there are only 2 wires... Red and black.. I tried connecting them to the backup light in the trunk, it is working because when I put it bin reverse when I have the rear view mode on and I put it in reverse the camera comes on... It just does not come on automatically when you put it in reverse.

Look over the install manual for the unit. The pertinent piece of info you need is there.

Look over the install manual for the unit. The pertinent piece of info you need is there.

Lol ok... I have installed them with my avic-z3 and it worked fine, it is in the same car setup the same way, same connections... Not sure why it would operate different on the z

120bt... But I will look at it again.

It sounds like the reverse lead isn't connected to the AVIC.

It sounds like the reverse lead isn't connected to the AVIC.

I agree with Jason.

On the camera: Red goes to acc power (+12v when ignition is on). Black goes to ground. RCA goes to the headunit. NOTHING FROM THE CAMERA GOES TO THE REVERSE LAMPS!

On the hard unit: Reverse wire goes to the reverse light +12v.

If you do this, then it will work.