(2) LED Amber Side Marker Turn Signal Semi Truck Fender Lights / Single Stud(2) Amber LED Square Truck Fender Marker Turn Signal Lights. Marker Lights and Turn Signal Functions. Clear Lens Single Post Mount. Wiring Through Mounting Posts. Driver and Passenger Side Included. 3 Wires (1 Wire with Ring Terminal) 21 LED Amber Face both sides and 3 LED Amber Marker Light. Heavy Duty Chrome Exterior Finish. Light Measures Approx. 4 3 4" by 4 3 4" by 2 1 2" and Mounting Stud Is Approx. 1 1 2" Long. DOT Approved. 12V Input. Other