Optronics (1) RED Camper Trailer Rv Light 6 LED 2 X 4 Surface Mount Clearance Marker (1) RED Camper Trailer RV Light 6 LED 2 x 4 surface mount Clearance marker Surface mount white base mounts on industry standard 3 centers. Two wire design includes both lead wire and ground wire for mounting to all surfaces. Reflectorized lens eliminates the need for a separate reflector to meet DOT requirements. Snap-on replaceable lens