2" Round Brake/Tail/License Plate Lamp as used on early bobbers. Only two wires for the brake and tail lights mean this light is self grounding through its housing. Red wire is 12V positive brake light. Black wire is 12V positive running light. This light uses a standard incandescent automotive 1157 bulb (included). Dimensions: 2" Diameter, 3" depth
is backordered. We will ship it separately in 10 to 15 days.