Partsam 3156 3157 Wiring Harness Sockets For LED Bulbs, Turn Signal Lights, Brake Lights Type: Male Compatible with 3157 and 3156 sockets (when use it for 3156, use just black and red wire) 14 Gauge wire, high efficient copper wiring Nylon plug (can withstand up to 1200 Fahrenheit) Heavy duty, High efficient, Heat resistant, Never melt