The Headlamp and Panel Dimmer Switch is the controlling
component for the interior dimming function. This switch uses an internal
 rheostat to allow the customer to set the dimming to a desired setting.
Power is available to the Headlamp and Panel Dimmer Switch at all times
from the PK LMPS fuse #9 through CKT 240 (ORN).
 Once the switch is turned to either the Park Lamp or Headlamp function, parade
dimming  is capable through CKT 1382 (PPL/WHT) to the illumination
lamps  of the following components:
|     •  | Transfer Case Switch Transfer Case Controls. | 
 
Power is also available for controlled dimming through the rheostat
to the ILLUM fuse #14 through CKT 44 (DK GRN)
when in one of the lighting functions. From the ILLUM fuse power is sent through
 CKT 8 (GRY) to the following components:
|     •  | Headlamp and Panel Dimmer Switch. | 
 
|     •  | Liftgate Release Switch | 
 
|     •  | Window Wiper/Washer Switch, Rear | 
 
|     •  | Automatic Transfer Case Controls | 
 
|     •  | Automatic Transfer Case Select Switch | 
 
|          | Ground for the above components is G200, through CKT 150 (BLK). | 
 
|     •  | Front and Rear, Auxiliary HVAC Control Switch Lamps | 
 
|     •  | Rear AC Selector Switch | 
 
|          | Ground for the HVAC Controls is G400, through CKT 150 (BLK) | 
 
|          | Ground for the Instrument Cluster runs through CKT 451 (BLK/WHT)
to both ground G103 and G104. |