Curt 4-Way Flat Trailer Connector Plug with 12" Wires. Splices into trailer wiring to provide a connection to the vehicle socket. 4-way flat output connects taillights, brake lights and turn signals. Constructed with bonded 16-gauge wires and durable molded rubber. Features 12" of color-coded wire for easier installation. Designed for use on vehicles and trailers with two-wire systems.