Pair of LED Rear/Tail Lamps for Truck Lorry Trailer Chassis
24V fast responding bright SMD LEDs with high output
for usage on 24V
3 chambers - 4 functions: RED Neon - Tail Light, Brighter RED Neon - Stop (brake) Light, 
Yellow (amber) - Direction Indicator (Flasher) Light
White - reverse light
Body material: ABS plastic
Waterproof rate: IP67
Unit size: 140 mm diameter, 45 mm thickness
Distance between fitting bolts' centers: 45 mm
Cable exits: Black - ground (negative), Yellow - Indicator, Blue - Tail light, Red - Stop light and White - reverse light

In some case an inline resistor might be required to prevent the indicator light 
flashing fast because of the low LED's power consumption.