Buyers Products 2.5 Inch Surface Mount Marker Light with 3 LEDs is used on trucks and trailers to meet FMVSS/CMVSS 108 regulations. The lights have three LEDs and can be ordered with an amber, red, or clear color lens. They fit existing ID bars or can be mounted using an available flush mount grommet. The clear version can be used as a courtesy light. Lights wire with a PL-10 connection. Lights are backed with a limited lifetime warranty.