Buyers Products Single Color 3.75 Inch Marker/Clearance Light is used on trucks and trailers to meet FMVSS/CMVSS 108 regulations. These lights have two LEDs and are available with an amber or red lens. They feature dual male bullet style connections that easily plug into a mounting bracket. NOTE: mounting bracket is necessary for initial installation and sold separately, see “Accessories” below for more information. Marker lights are backed with a limited lifetime warranty.