mine is not wired to the reverse lights..................................
and I can have it on all the time - driving and watching the peanuts behind me or reversing (which I have never bothered to look, while reversing)
twice maybe in 7 years, I have looked at the camera while reversing
my camera is mounted on the drivers side, at the rear of the Van on the rear bar........
when I was teaching SWMBO how to tow the Van, I got her used to looking at the monitor, to let her know when she was far enough in front of who ever she passed, to move back into the left lane
120* camera, when the whole front of a car is in the monitor, your about 50m in front of them