Our Dealer uses an auto audio dealer to install cameras both in the truck and camper. They hard wired the camper's rear camera into a plug on the truck so we wont picture while traveling down the road. The second camera is in the 3rd brake light on the truck. This one is great for hooking up/disconnecting from the camper. Even wife can now hook the LM up before I get home. Both are switched back into the truck with the switches on the center console and uses the factory installed nav system.