The TowSmart Electrical Connector is the quickest and easiest way to make electrical connections between your vehicle and trailer when towing. The one-piece construction provides a 4-way flat connector (trailer end) with 12 inches of 18-gauge bonded wire that provide stop, turn and tail lights. Features an ergonomic, durable plastic construction that is corrosion resistant to withstand harsh weather conditions. For the safest towing, ensure all functions are properly equipped.