Note: Only the long 46cm has a license plate light on the left.  Feature:  1.Work on 24V power supply.  2.High quality and durable, long life and low power consumption. 3.Easy install, mounting includes screws and nuts. 4.Waterproof, shock & vibration proof, UV resistant. 5.Fit for most truck, UTE, trailers, caravans, campers, buses etc.     Specification:  Product Name: Flowing Trailer Truck Tail Light.  Material: LED+ABS.  Light Color: Red,Yellow, White.  Length: 33cm / 41cm /46cm.  Voltage: 24V.  Service Life: ≥50000h.  Light Source: LED.  Placement on Vehicle: Rear, Left, Right.  Qty: 2pcs/pair.     Wiring: Black: Negative.  Yellow: Running water turn singal (Yellow).  Red: Brake Light.  Blue: Fog light.  Green: Driving Light.  White: Backlight Light.     Note:  1.We provide clear pictures, measurements where possible. Please check as much as possible to make sure the item is the one that you need.  2. Please allow 0.5-1 inch difference due to manual measurement.(1inch=2.54cm) 3.There are no instructions included in this kit.If you want to know how to use or install it,please contact us by Email.We will provide help as much as possible.     Package Included:  2 X LED Trailer Light