The backup lights are in the tailgate as well as the license plate. Run the camera light wire through the license plate light hole and connect to either the left or right backup light. They are Grn/Blk wires. The display can be wired to any ignition on hot wire ( accessories socket). If it works like mine it will come on when it gets a signal from the camera (or when you drive by a house with a security camera). You have to remove the tailgate inner cover to get to the wires.