Pioneer AVIC-Z110bt caution screen may appear reversed

[HandsomeSteve]

Pioneer AVIC-Z110bt caution screen may appear reversed

Well I just had to have a backup camera now I have no display an my buttons are locked.

I do have the AVICs green connected to the RP4GM11 adaptor red w/white trace (which is the parking brake) before I did this connection I was unable to enter addresses in the NAV, parking brake must be ingauged.

 I have the camera power an the video signal cables power connected to the chevy express's green reverse wire an grounded to body at HU end just the RCA plugged into the brown RCA. in settings the camera was on an polarity was battery but no video.

I have tried to release the parking brake then shift to reverse w/ engine on an off.

Still no display. Also tried depressing parking brake then releaseing then reverse still no display.

While I was messing around somehow my NAV shrunk down to 1/3 it’s size an shifted to the right so I pressed default settings this is when the screen went black.

 

The USB source is still playing fine just no display.

 

Thanks for any tips on resolving this issue.