Each unit can power up to 2 sets of stop/turn signals Has a replaceable 4 wire flat extension For vehicles equipped with independent bulb turn signals and brake lights or common bulb systems Can power up to 5.0 amps per output Double-molded weatherproof design Each unit can power up to 2 sets of stop/turn signals Has a replaceable 4-wire flat extension For vehicles equipped with independent bulb turn signals and brake lights or common bulb systems Hopkins Manufacturing Corporation makes your towing experience simpler and more rewarding through innovation and value. Hopkins offers a variety of towing solutions including vehicle wiring kits, adapters, vehicle and trailer connectors, breakaway systems and much more. Today, more than 40 percentage of retail category sales are generated from Hopkins innovations. These units completely isolate the tow vehicle from trailer malfunctions. Power is taken directly from the battery for isolation and brighter trailer taillights.