How to connect reversing back up camera on car?
There are 3 kind of interface on camera:
3 kind of interface on back up camera

Reverse camera installation diagram:
A: Display head unit position
B: Camera power on +12V from rear car light
C: Back up camera position
reverse camera installation diagram

How to hook up belsee back up camera to radio?

Trigger-A on the Reversing Wire and Trigger-B on the Rear lamp + and the reversing camera goes.

reverse camera installation diagram reverse camera display on radio screen