As an update to losing my rear camera when you remove your tailgate to put your camper in, I found a solution. This will plug into the empty plug when you remove your tailgate and restore the rear camera.
I also bought the license plate camera to go along with the OEM plug. This works perfectly for a 2015-2019 Ford f150.
https://www.rearview...em-harness.html
As a side note to the moderators who randomly move posts around I think this post best fits into the four wheel camper forum, it's a common problem that people have as soon as they remove their tailgate.