I installed my rear camera to my Z2. However, when I turn it on (from the Z2 AV settings screen), it won't switch to the camera screen when in reverse. I also noticed when I start the car up, the camera screen pops on as if the car was in reverse.

Could the reverse wire be hooked up incorrectly??? (maybe the Z2 thinks that the car is in reverse all the time?)

Change the polarity setting in the camera settings (same place you turn it on and off).

I changed the Polarity around to Ground and battery.. still same problem.. hmmm.. the camera works, it just doesnt pop on when the car is in reverse (possibly the Z2 doesnt know that the car is in reverse)