The problem with instalation is that it's very rig dependent, for example on my MH if you cheat a bit it's simple as pie, in fact you don't even have to cheat (My rig has a "False rear" that is there is a very good size "Gap" between the rear of the rig that someone would see if behind me and the real back wall, (Couple of inches at least) so instalation of a back up camera is very easy, here is how
Drill a hole for the wire, drop a weighted fish line down it, tie line to wires and pull them up, attack to camera, attach camera with screws and seal the opening with seaing stuff. However if your rig is not so blessed with a nice gap, you have a job and a half.
Then it's just routing the wire under the rig till you can bring it up into the dash area (likely via firewall) and hook to monitor
Beyond that everything is simple electronics or if you like 12vdc electrical, nothing to it at all
That said, the manafacturer mounted my camera, which is helpful when backing up and driveing (I just wish I did not have to manually turn it on when going forward) When backing up it really does help with stopping BEFORE I hit the pine tree at the rear of my parking pad (Back up till the needles touch the screen) alas, did not help much with the ASH out by the road though, it was off camera when I hit it :-( But the damage was minor and will soon (I hope) Be fixed