Headlamp Switch In ON Position

CIRCUIT OPERATION
The headlamp switch has three positions: ON, PARK (parking lamps) and OFF. In the ON position, the headlamp switch connects circuit A3 from fuse 7 in the Power Distribution Center (PDC) to circuit L2. Circuit L2 connects to circuit L4 through the dimmer switch circuitry in the multi-function switch. Circuit L4 connects to circuits L43 and L44 through fuses 4 and 5 in the junction block. Circuits L43 and L44 power the low beams of the headlamps.

When the operator selects high beam operation, the multi-function switch connects circuit L2 to circuit L3. Circuit L3connects to circuits L33 and L34 through fuses 3 and 16 in the junction block. Circuits L33 and L34 power high beam operation. Circuit Z1 provides ground for the headlamps.