Specification Color: Amber/Yellow Voltage: 12V Number of Bulb: 10LED Material: ABS+PC+Rubber Waterproof rate: IP67 Outer Diameter: 6 inch Function: Stop/ Turn/ Tail Light/ Backup Reverse light Placement on Vehicle: Front/Rear, Left/Right Suitable model: Universal for Trucks, trailers, tractors, semi-trailer, Dump Truck, bus, boat, special vehicle, and etc. Fits for heavy duty trucks like Peterbilt, freightliner, international ,Kenworth, mack, and so on Wire Connection: Black wire : low brightness Red wire : high brightness White wire : negative pole .