My 2018 Ford F350 had a different camera connector than my old truck. So I purchased a new camera and cable from: Bob's Automotive Mirrors & More LLC
It has the correct plug to connect to the ford dash display.
He has other cameras and cables if you want to use a different camera location or brand of truck.
I mounted the camera to the bottom mount of my Lend-A-Hand RV Hand rail.
I drilled a hole in the bottom of the mount and cut a slot to allow the cable to hang down the bottom and not get trapped against the wall. I connected the camera cable and extension cable and used grease to keep water out of the connector. I plugged the cable into the truck plug and also put the dust cover on the cable for the tail gate latch. I did cover the camera cable with a 1/4 inch hose to protect the cable. I used a cable clamp to secure the wire to the camper. It is important to tell Bob what year and brand of truck you have to ensure getting the correct equipment.