It sounds like you may not have it wired correctly. When the vehicle is reverse the cam works, but when you shift to any other gear IE: park, drive etc you go to black screen as if no signal. I had basically the same problem on my unit, different unit but...on the back of my unit there was a wire, you probably have the same, that said rear cam 12v dc.I assumed this meant any positive wire would do, but this is NOT the case. That wire must be hooked to the 12v positive reverse light. With my cam I had the wires from the cam hooked up, red to positive reverse light wire, black to ground and obviously video wire to the video in on the unit. but the problem arose with that rear cam 12v dc wire on the back of the unit. It NEEDS to be connected to the same 12v dc wire as the cam itself. This acts as a 'switch' when in reverse, IE: the reverse lights come on sending power to the wires to turn on the cam. When you're not in reverse the camera 'switches off' because the lights are not on, thus no power is being sent to the wires, thus returning the unit to its normal operating screen. This worked for me, hope it helps. Good Luck.
on Jan 06, 2013