I installed the Garmin wireless back up camera in our Scamp
16. It displays on the 7" GPS on the dash of the pickup. I mounted the camera inside the rear trailer window and using the Garmin extension cord ran the wire along a corner in the ceiling hot-glued to the rat fur up to the front cabinet. I tied power into the bathroom light
wires which are exposed in that cabinet and put a manual switch in the cabinet wall. I cut away a 2x2 inch square of the rat fur and insulation inside the front wall of the trailer and mounted the transmitter there so it has good line of sight to the GPS display. It works fine unless I have too much metal stuff stacked up in the back of the pickup. I use it like a rear view mirror (always on) but it is still a fish eye camera so if you can see anything in the display you know it is close.