Hello everyone and thank you in advance for your replies.
I have an 8" Furrion observation/backup camera system that can accommodate up to 4 cameras (left/right/back/door). I opted to not buy the door camera, but on my screen there is a black square labeled 'door' taking up 25% of the screen. Although I tried to figure this out I refuse to accept that a system that cost this much, in today's ultra technological gadget filled world, that it does not have a way to eliminate that unused camera (black square) off the monitor screen. Please tell me I'm missing a simple step to clear that. Waiting for reply from Furrion. Any help now would be appreciated.