Buyers Products 5 Inch Box-Style Incandescent Stop/Turn/Tail Light for Trailers Under 80 Inches Wide is used on trailers to meet FMVSS/CMVSS 108 regulations. The light features a red colored lens and built-in reflector. It uses push-in connections and grounds through the mounting stud. Wiring is not included. The driver side version also includes a license plate light. Lights are sold in multiples of 10 and backed with a limited lifetime warranty.