Headlamps

Battery positive voltage (B+) is supplied at all times to the headlamp switch, the lamp control module (LCM), and the switch of the IP junction block headlamp relay position J through the LH MaxiFuse� Block LCM/HDLP circuit breaker via CKT 242 (RED). When the headlamp switch is placed in the ON position, battery positive voltage (B+) is supplied via CKT 10 (YEL) to the coil of the headlamp relay position J which is permanently grounded to G201 via CKT 1450 (BLK). The coil is energized and the contacts close providing battery positive voltage (B+) to the headlamp dimmer switch via CKT 1346 (LT BLU). When the headlamp dimmer switch is in the LOW position, battery positive voltage (B+) is supplied to the LH and RH low beam headlamps via CKT 12 (TAN). When the headlamp dimmer switch is in the HIGH position, battery positive voltage (B+) is supplied to the LH and RH high beam headlamps via CKT 11 (LT ORN). When the ignition switch is in the RUN position and the ambient light sensor indicates darkness, the LCM provides battery positive voltage (B+) via CKT 1346 (LT BLU) through the headlamp dimmer switch to the headlamps.