Ultra-Fab Products 36-947001 6A Heavy Duty 3-2 Tail Light Converter Constant voltage control for turn and brake lamps provide maximum brightness Fail-safe circuit design - Trailer brake lamps function even if tow vehicle turn lamps fail 3 loads, 5 amp capability on each function - Diode isolation to tow vehicle minimizes risk of computer damage Unit generates no heat, and is protected even if trailer laps short out - Brake lights always work Manufacturers 1-Year Warranty