Headlamp: Description and Operation

LO BEAM OPERATION

With the headlight switch in HEAD and the dimmer/passing switch in LO, the light switch provides a ground path to the headlight relay, and the dimmer/passing switch provides a ground path for the lo beam filaments. The headlight relay energizes and then provides battery voltage to the headlights: the lo beams light up.


HI BEAM OPERATION

With the headlight switch in HEAD and the dimmer/passing switch in HI, the light switch provides a ground to the headlight relay and the dimmer/passing switch provides a ground path for the high beam filaments. The headlight relay energizes and then provides battery voltage to the headlights: the hi beams light up.
Battery voltage is also applied to the hi beam indicator: the hi beam indicator lights up to remind the driver that the hi beams are on.

FLASH TO PASS OPERATION

The flash to pass feature works with the headlight switch in OFF, PARK or HEAD (lo beams). When the flash to pass switch is turned on, it provides a ground path for both the hi and lo beam filaments and the headlight relay. The headlight relay energizes and applies battery voltage to the headlights and to the hi beam indicator light: the hi and lo beams light up. The hi beam indicator also flashes during the flash to pass operation. The flash to pass function has no effect if the hi beams are already on.