LED Heavy Duty Trailer License Plate Light, Ear Mount, 5 Diode - Chrome Plated •Surface mounts on 3-1/4" centers with ear-mount base •Two-wire design includes lead and ground wires for mounting to all surfaces •Dimensions: 4" L x 1-3/4" W x 2-3/16" D •Center of mounting hole to center of mounting hole: 3-1/4" •Light draws 0.054 amps at 12.8 volts