Anderson LumenX Oval LED Trailer Stop, Turn, Tail Light The Anderson LumenX Oval Trailer Light is a stop, turn, and tail light in one and includes a grommet and 421-491 plug. This light features seven white diodes behind a red oval lens. Using advanced optics, these diodes fully illuminate the whole lens. This tail light has a industry-standard PL3 socket integrated into the housing. It has a 9-16 volt operating range and its regulated design provides voltage protection and consistent light out