Red Flange Mount 4" Round LED Stop, Turn & Tail w/Reflex. 7-diode, 4" round LED stop, turn & tail light. New white diodes behind red lens. Optically advanced design fully illuminates lens. Industry-standard PL3 socket integrated into housing. Flange with reflector optics integrated into housing, eliminating need for separate reflector. 9-16 volt operating range. Regulated design provides voltage protection and consistent light output over entire voltage range. Does not require “Top" positioning to meet FMVSS 108 standard. Includes protective gasket.