These lights have 9 LEDS . They feature engineered lens optics, and function as clearance lights, side marker , identification or stop turn tail lights. These are ideal for any application on trailers and universally. Includes Chrome Plated surface mount with 2 screw base and a 3 wire direct connection for stop turn tail or side marker functions. PC lens, ultrasonically welded together to ensure a permanent and water proof seal. Meets DOT FMVSS 108/SAE requirements. Rated for 12V, tested to 13.8V