Universal 2" on center stud mounting. Screw-on main and side marker lens allow for easy bulb replacement. This tail light is designed for a variety of under 80" light-duty trailers. Wiring uses quick connect and disconnect features. These tail lights meet FMVSS/CMVSS 108 requirements. Size is 5.13" x 4.59" x 2.87". PUSH-IN WIRE ON BACK