7-diodes, oval LED (light emitting diode) stop, turn, and tail lights. White diodes behind red lens. Advanced optics fully illuminate lens. Industry-standard PL3 socket integrated into housing. Regulated design provides voltage protection and consistent light output over entire voltage range. Meets FMVSS 108 requirements in horizontal, vertical or any 360 deg (degree) position. Kit includes light, grommet and 421-491 plug.