I have a Z1 modified to a Z3 with the wired bypass. I also have a Pioneer rear view camera installed. I have always had the rear view image apprear full screen whenever I shifted into reverse, but something is amiss as it no longer is displayed (i.e. the map continues to display when in reverse). I can still get a rear image when I press the Map button and then on the screen press Rear View, so I know the camera and it's connections are OK.
I suspect that whatever wire connects to the AVIC so that it senses when the transmission is in reverse has malfuctioned, but I resently had to do