Headlamp: Description and Operation

The circuit consists of headlight, fog light, lighting switch, dimmer.passing switch, fog light switch, high beam indicator, lighting relay and fog light relay. When lighting switch is turned on by setting it at headlight position, lighting relay is activated to turn on headlight. Optical axis of headlight can be turned up or down by operating dimmer switch while headlight is on. Passing switch is independent of lighting switch, and optical axis of passing light can be turned up only while switch lever is pulled up and held in this state.
When fog light switch is turned on while headlight on at low-beam, fog light relay is activated to turn on fog light.