I'm considering doing this on my Eagle HT with my F-350.
Having a fifth wheel, I run with my tailgate removed for most of the summer. Doing this, I lost my backup camera. I have a Back Rack on my truck. I decided to buy a backup camera to mount to the Back Rack and ordered the camera harness plug from the Ford dealer. I wired up the plug to the camera (had to extend the wiring on the camera to reach the plug) and it works.
I have been considering buying another $20 camera and harness plug to be able to see behind the camper. Haven't gotten to that improvement just yet.
2016 Jayco Eagle HT 29.5BHDS (ordered 12/30/15, delivered 3/8/16)
2015 F-350 crew cab, short bed, 6.7L PSD, Pullrite Superglide 3300 hitch