Partsam Waterproof 2pcs 15" Inch Amber Yellow 11 LED Stop Turn Signal Tail Park Strobe light Bars 2 Function 11 Diodes Surface Mount Truck Trailer Identification Marker ID Bar Sealed Partsam ( 2xAmber ) 15 inch stop, turn, tail and backup reverse light bar, completely sealed & waterproof. Functions as clearance light, side marker or identification light, stop, turn, tail and brake light Each light has 11 Super Diodes for a Bright Performance; Polycarbonate lens is sonic welded to the housing. Used on heavy duty trucks, semi trailers, cargo trailers, boat trailers, work vehicles and a wide or narrow overland vehicle requiring quality DOT rated lighting. EASY TO INSTALL: White Wire - Ground; Red Wire - high brightness; Black Wire - low brightness.