This is a Standard Round Three Function Incandescent Trailer Light for the left hand, also called driver side. This light is a perfect replacement for your Utility style (non submersible) trailer. It performs the basic three functions of stop,turn, and tail and also has a light for your tag. Uses a standard dual filament included 1157 bulb which can be replaced by removing the lens. It mounts using two integrated 1/4 inch mounting bolts and included hardware that has the standard 2 inch spacing found on most light brackets. One of the posts acts as the ground when mounted to the frame of your trailer. The pigtail coming out of the light is wired Red for your brake and turn signal and Brown for your tail/running/tag lights. The right hand light that matches is Round Standard Three Function Incandescent Trailer Light RH
. This Light will commonly mount inside a Round Light Protector for protection from damage. This Light is 3 3/4 inch Outer Diameter and is the industry standard 428W distinction.