Demco 9523047 Bulb-Style Tail Light Wiring Kit Self contained wiring kit is designed to by-pass your towed vehicles' proprietary wiring system Eliminates the need to tap into the towed vehicle's electrical system Wiring is routed underneath the towed vehicle to a front mounted socket at the front of the car Kit includes: bulbs and sockets, 26 ft. 4 conductor 16 gauge wire, butt connectors, ring terminals, nylon ties and wiring instructions