Built in LED emits cozy beam, penetrating to the switch cover that lights up the patterns, you can see the switch clearly even in the dark. The rocker switch is made of tough plastic material and well-conductive pins to ensure long service life. For upgrading most wiring harness to control LED light bar, LED work lights, fog lamps, headlights, taillights and auxiliary lamps, etc. The rocker switch LED light turns on and off smoothly. Easy to install. The LED light bar rocker switch fits for car, truck, boat, etc.