Red Hound Auto Magnetic LED Trailer Towing Light Kit Magnet Mount Tow Tail/Brake Lights 12V 40-LED + Wire Harness 2 Magnetic LED Towing Lights 4 in Diameter; 40 Super Bright LEDs Scratch resistant base easily mounts to any vehicle, double sided red brake and amber flashers Lab tested to make sure they can withstand vibration, wet conditions, movement, and that the light is bright 20 ft wire harness