Set of 2~ LED 4" Red Round STOP TURN TAIL Light w Grommet Pigtail for Truck Trailer US Seller Set of 2~Red 4" Round LED Lights. Functions as brake stop turn and tail light. Electronics covered in epoxy to resist corrosion and moisture 12-diode square LED light. Operates from 9-16 volts DOT & SAE approved . Best seller. Top Quality GARANTEED!!! Red lens, red light.