Dimmable Lamp

With the headlamp and panel dimmer switch in the park or head position, voltage is supplied to the instrument panel (IP) dimmer switch via CKT 44. The voltage output of the IP dimmer is veritable and goes through the ILLUM fuse via CKT 8 to the cluster, radio and various IP switches. For the radio and cluster displays and some switches, an additional circuit is required, CKT 1382, for the these components to dim. CKT 1382 is a 12 volt output of the BCM, and is hot when park or headlamps are on.

Some circuits are monitored by the BCM, and upon failure may set a DTC.