This is the Red Oval Incandescent light for your trailer. This light is sealed and can be submerged. It is a three function light meaning that it is a stop,turn,and tail light. If you've lost of damaged a 6 1/2" Incandescent oval light, and still have the grommet, this light will mount snugly into the grommet and housing. The 3-Prong style wiring harness plugs into the back of the Incandescent light. This price is for one light.