Shop Nilight Round Double Face Fender Pedestal Light 2PCS 48LED Amber Red Brake Turn Marker Tail Light w/Stud Mount for Mack Kenworth Freightliner Truck Trailer Towing in high quality, support 2 Years Warranty. Come with 3 wires. White wire for ground, black wire for 50% brightness running light, red wire for 100% brightness stop/brake and turn signals light.