Voltage is supplied to the IP dimmer control when the headlamp switch is in the PARK or HEAD position. The voltage goes through the ILLUM fuse to the following components:
| • | The IP lamps | 
| • | The AM/FM stereo radio | 
| • | The HVAC controller | 
| • | Various switch lamps | 
Voltage is supplied to the IP dimmer control when the headlamp switch is in the OFF/AUTO position. The voltage is supplied from the park lamps circuit.