FXC 10X 12V 6 LED Truck Bus Boat Trailer Side Marker Indicators Light Lamp Amber? 12V 6 LED Amber Side Marker Light,6 PCS High Quality SMD LED Inside of the Lamp Offer Extreme Bright light. Waterproof PC Lens,Shock Proof ,Dust Proof ,with Foam Tape Base and Screw,Size:3.8'' x 0.8'' x 0.4"The Center to Center Dimension Between the Screw Holes:3.3". Function as Side Marker Light,Rear Light Indicator Light,Turn Signal Light Rear Tail Light,License Light,Parking Light,Clearance Light,As Exterior Safety Signal Light At Night. Lifetime Warranty , Our Strict Quality Control System, We Test Each Item and 100% Ensure In Good Condition Before We Ship. Offering Customer Technical Service, Feel Free Contact Us for Technical, Installation and Use Question. Universal All Cars Trailer Clearance Bus Van Caravan Boat Lorry Truck. Easy to install with Free end wire ( Red is Positive, Black is Negative/ground ); the wires come out of the back of the light; Two-wire design includes both lead wire and ground wire for mounting to all surfaces.