Required for trailers over 80 wide, the Optronics Sealed LED Identification Light Bar will provide reliable illumination for a lifetime. Sonically sealed to be completely waterproof, this light consists of 3 bright LEDs inside a rugged polycarbonate lens and housing, with a standard 12V 2-wire lead. The Optronics Sealed LED Identification Light is to be mounted at the center of your trailers back end and connected to its running-light circuit. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Trailer Accessories.