This is a wireless camera. All it needs is power. The transmitter is about 1.5" X 1.5" and about 3/8" thick. It is waterproof I believe. It is attached to the camera by X feet of wire.
Mount transmitter behind the license plate or under / behind the rear bumper. Mount camera...Connect +/- to the light on the licence plate.Done!
Before you make anything permanent, test to be sure the wireless signal will get through your trailer and truck to the camera.
My transmitter is inside my aluminum trailer and the GPS on the dash board. It work great from a few hundred feet away.
