Panel Dimming

With the park lamps on, battery positive voltage (B+) is supplied through the IP fuse block INT LPS Fuse via CKT 32 (YEL) to the dimming switch. The dimming switch supplies a variably controlled voltage to the dimmer module(s). The potentiometer in the panel dimming control cannot provide enough current to operate the panel lamps. The dimmer module(s) amplifies the current and supplies the variable voltage to the panel lights. As the amount of current increases, the lamps become brighter. As the amount of current decreases, the lamps become dimmer.

There are two dimmer modules that supply current to the panel lights. The RH dimmer module supplies current via CKT 8 (GRY) to the seat switches, seat/lock switches, power window switches, passenger climate control, ashtray lamp, shift select switch lamp, power mirror switch, fog lamp switch, release switch, and traction control switch. The LH dimmer module supplies current via CKT 1244 (BRN) to the steering wheel controls, instrument cluster, heater and A/C control, and radio.