Dimmer Switch: Description and Operation
HEADLAMP AND INSTRUMENT PANEL LAMP DIMMER SWITCHThe headlamp and instrument panel lamp dimmer switch with thumbwheel dimmer control is mounted in the IP to the left of the instrument cluster.
The headlamp switch controls the following lamps:
^ The headlamps
^ The parking lamps
^ The sidemarker lamps
^ The tail lamps
^ The interior lamps
^ The IP lamps
The dimmer control regulates the intensity of the IP illumination.