Buyers Products 2 Inch Round Marker/Clearance Lights with 1 LED are used on trucks and trailers to meet FMVSS/CMVSS 108 regulations. The lights are available with a red or amber colored lens and have a PL-10 style connection. Lights are available in bulk (sold in multiples of 10) or individually in kits that include a plug and grommet. They are backed with a limited lifetime warranty.