The Demco Auxiliary Light Bar for towing vehicle on a towing dolly provides you with an easy way to add brake lights, tail lights, hazard flashers and turn signals to the car that you're towing. This towing light bar connects to any standard automotive or RV lighting system, to allow full control of lights within the towing vehicle's system. Accessory Light Bar is fully wired and self contained. Y-connection included to connect tow dolly and motor home.