Abstract: A wireless light control system for use in conjunction with a towing vehicle having a plurality of lights and a trailer also having a plurality of corresponding lights. The control system includes a control circuit mounted to the vehicle which receives electrical inputs representative of the status of the towing vehicle lights and a radio transmitter which transmits a radio signal representative of the status of the towing vehicle lights. A responder circuit is mounted to the trailer and includes a radio receiver which receives the radio signal from the transmitter. The responder circuit also includes a circuit responsive to the received signal for generating output signals to selectively activate the lights in the trailer system so that the trailer lights are activated in synchronism with corresponding lights on the towing vehicle.