This unit completely isolates the tow vehicle from trailer malfunctions. Power is taken directly from the battery for isolation and brighter trailer tail lights. Each unit can power up to 2 sets of stop/turn signals (5.0 amps.) on the trailer and possesses a replaceable 4-wire flat extension. Solid state electronics. For vehicles equipped with independent bulb turn signals and brake lights or common bulb systems 3-2.

 PROP 65 WARNING: This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling. For more information, visit www.P65Warnings.ca.gov