Principles of Operation

PRINCIPLES OF OPERATION

Dimmable Instrument Cluster and Panel Lighting
When the headlamp switch is in the PARKING LAMPS or HEADLAMPS ON position, the instrument panel dimmer switch uses electronic circuitry to provide a variable pulse width modulated (PWM) output to the instrument panel and all applicable switches depending on the driver-controlled level of intensity.

Non-Dimmable Instrument Cluster and Panel Lighting
When the accessory relay is energized, voltage is supplied to the door lock switches and the power window switches, turning on switch illumination.