Apparently you have a post in the forum section "Garrage" where you describe your crv as having a "cctv reverse camera." I thought this meant you were using a cctv camera as a backup camera. Perhaps not.
I cannot find a backup camera that fits my needs. So, I started looking at cctv camera's instead and wondered if they could be connected to a vehicle backup camera system and were compatible electrically. No-one seems to know.
Anyway, have you plugged a cctv camera into a vehicle backup camera input, and did it work?