Multi-Functions: Each light composed of 11 high-quality 3030 SMD LED, outputs high brightness and low brightness which can perfectly work as parking light stop brake light turn signal light and tail light. | Highly Sealed & Durable: The front Polycarbonate lens is sonically welded to the housing and the back wire lead is add on glue to make sure the light is completely sealed waterproof enough to withstand all weather abuse. | Simple Wire Connection: The light bar has three wires, white wire for ground, black wire for low brightness tail light and red wire for high brightness turn signal light. | Quick Installation: To flush-mounting the light one option is to drill a center hole or use the existing hole to go through the back wire lead and then fix the two ends by drilling in the two screws provided. The other option is to add some washer when fixing the two ends or use a bracket to mount the light to avoid drilling holes for the back wire lead. | Wide Application: Can be perfectly used on most 12V heavy duty trucks, semi trailer, cargo trailers, boat trailers, travel trailers, horse trailers, RV camper work vehicles, etc. | Package Include: 2pcs 16inch amber trailer marker ID bar and 2 packs of accessories. 2 Years Warranty Honored by Nilight.