Headlamps

Voltage is applied at all times to the Lamp Control Module through the HEADLAMP Circuit Breaker and CKT 242. With the Head Lamp Switch ON, the Headlamp Switch input to 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. When the Ignition Switch is in RUN and the Ambient Light Sensor indicates darkness, the Lamp Control Module provides voltage through the Headlamp Dimmer Switch to the Headlamps.