Headlamp: Description and Operation

When the Head Lamp Switch is depressed, the Headlamps input to the Lamp Control Module is grounded. The Lamp Control Module is grounded. The Lamp Control Module then applies voltage to the Headlamp Dimmer Switch. When the Headlamp Dimmer Switch is in the "LO" position, the LH and RH Low beam filaments light. When the Headlamp Dimmer Switch is in the "HI" position, the LH and RH High Beam filaments light.