Back Up Camera on trucks

We recently purchased an F350 Crew cab pickup, the back up camera is awesome for hitching up a regular trailer with the hitch on th bumper, we also have a 5th wheel camper with a goose neck adapter on it, our truck has the goose neck ball in the bed, a camera on the back of the cab would be very helpful in hooking up the camper, they could be on a switch so you can have on which ever camera you are needing at the time.