FeaturesUsed To Tie Into The Towed Vehicles Brake Light, Running Light And Turn Signal Wiring, And Connect It To The MotorhomePermit Electrical Current To Flow In Only One Direction - From The Motorhome To The Towed Vehicle's TaillightsPrevents Electrical Feedback And The DamageHeavy-Duty, Powder-Coated Aluminum Heat SinkWeight - 0. Welcome to Pacific Cycle.