Ensure electrical system safety, bright headlight operation, and problem free night driving with a new headlight switch.This VW Headlight Switch is secured to the dash with a special 14mm dash switch escutcheon. This Headlight Switch has 3 positions, OFF / PARK-DAYTIME RUNNING LIGHTS / HEADLIGHTS. Rotating the knob controls the internal rheostat that allows you to dim or brighten the dash lights.