Operation CHARM: Car repair manuals for everyone.

Headlamps

Circuit Description

Low Beam Operation

With the ignition switch in ON, battery voltage is applied to the coil of the head lamp relays (LOW/HIGH) from fuse 5. When the light switch in HEAD, ground is provided to the coil of the head lamp relay (LOW) through the light switch. Battery voltage from the head lamps fuse (LOW) is then provided to the lo~ beam head lamps through the closed contacts of the head lamp relay (LOW). The low beam head lamps light.


High Beam Operation

With the ignition switch in ON, battery voltage is applied to the coil of head lamp relays (LOW/HIGH) through fuse 5. When the light switch in HEAD, ground is provided to the coil of the head lamp relay (LOW) through the light switch. Battery voltage from the head lamp fuse is then provided to the low beam head lamps through the closed contacts of the head lamp relay (LOW). When the dimmer/passing switch in HIGH, ground is provided to the high beam head lamps through the dimmer/ passing switch and light switch. Ground is also provided to the high beam indicator in the instrument cluster.

Flash Operation

The flash feature works with the light switch in all positions (OFF, PARK or HEAD). When the light switch in OFF or PARK and the dimmer /passing switch in FLASH, ground is provided to the head lamp relays (LOW/HIGH) through the dimmer/passing switch. Battery voltage is applied to the high/low beam head lamps and the beam indicator. When the light switch in HEAD and the dimmer /passing switch in FLASH, ground is provided to the head lamp relays (LOW/HIGH) through the dimmer/passing switch and light switch. Battery voltage is applied to the high/low beam head lamps and the beam indicator. The high beams and the high beam indicator light as long as the dimmer/passing switch is held in the FLASH position.