TC Bros. Polished stainless steel 12V Ford Duolamp reproduction tail light with red glass lens. Light features both a brake/running light as well as a License plate light to illuminate your plate at night. The two wire hook-up for the brake and tail lights mean this light is self grounding through its housing. The black wire is the 12V positive running light hookup. The green wire is the 12V positive brake light hookup. Light features standard automotive style bulbs (#1156 for Brake Light, and #67 miniature for Running Light). Replacement bulbs are easily sourced from local autoparts stores should you ever require. These lights measure 3 3/4" in diameter, 2 1/4" deep. The mounting studs are 1 3/4" center to center. Great light for your old school bobber or chopper! Note: For best results on high-vibration applications, isolate the tail light mount with rubber grommets.