Buyers Products 3.125 Inch Rectangular Marker/Clearance Light with Reflex and 2 LEDs is used on trucks and trailers to meet FMVSS/CMVSS 108 regulations.
The lights are available with an amber or red lens and use a PL-10 connection. They feature an internal Reflex optic, which eliminates the need for a separate reflector.
Lights are available in bulk (sold in multiples of 10) or individually in kits that include a grommet and plug. They are backed with a limited lifetime warranty.