I have a 2008 Rav4 that I just installed a Pioneer AVH-521EV video headunit in. I then wired in a backup camera. I ran a separate wire to feed the power to the camera through the 12v switched wire at the stereo. The wire that came with the camera is the one I used for the reverse light hookup. I unfortunately get no video, but the lights on the camera turn on and the radio switches to the camera when put in reverse...there is just a black screen when I do. Do you think this is because the camera is broken? Any other reasons? It is grounded on the back door bolted to a couple other grounds.