It's great that you started your own thread for a different MH application but have you reviewed this thread:
https://www.thorforums.com/forums/f2...ons-30245.html
There are other threads that also discuss this topic at length.
Assuming Thor has not changed anything in this area on the 2022 coaches this should be an easy install. Put a 12 VDC powered 10" monitor with AV input on the dash (mine is just to the left of the steering wheel) and feed the AV in from the output of the 3 camera switchbox that currently feeds the radio. You can either put a video splitter in to keep cameras going to the radio or just use the monitor. It should always give you a rear view unless you activate the side cameras with the turn signals.