This is the Replacement LED Tag light for your trailer. It replaces your worn, dim, or broken license plate light with a nice new bright LED Light. Great for boat and utility trailers alike.This light is sealed and weather tight so that it can be submersed for use on boat trailers. It mounts using its stainless steel base with either two self tapping screws or bolts (not included). The wiring is very basic being that it is a single function light. The white wire is the ground and the black/power wire gets tied in with the running light wire which is commonly brown. This light is a great replacement for incandescent lights because LED's tend to be more rugged and last longer.