Headlamp: Description and Operation

When the headlamps are switched on, the parking lights, which also include the rear lights and number plate lighting, will also light up. The Parking Lights are dealt separately.

Full Beam
Ignition switch 20 must be in the Drive position before full beams can be switched on. Current will then be supplied to light switch 10, connection X. Dipswitch 215 is spring-loaded.

When light switch 10 is in position 2, lighting relay 8 receives operating current from connection 56 of the light switch. The "upper", coil in lighting relay 8 is energized and contact is made between connections 30 and 56b in the relay.

Pressing dipswitch 215 once energizes the "lower" coil and contact is made between connections 30 and 56a of lighting relay 8.

Current is then supplied via lighting relay 8, connection 56a, to full beam lamps 11, via filament monitor 228B and fuses 7 and 8 (current for full beam indicator lamp 47G is also supplied via fuse 7).

When full beams are on, dipped beams will also be on at reduced intensity. (This function has been discontinued during the model year.) Current is then supplied via connection 56a of lighting relay 8 to the coil of relay 78, which is then energized. Current is supplied via fuse 11 and the relay contacts through resistor 80 to dipped beam lamps 12 via filament monitor 228B and fuses 5 and 6.

When full beams are switched on, current for the parking lights is taken from light switch position 2 via pin 58.

Headlamp Flasher
Full beam can also be activated irrespective of the position of the ignition switch and light switch by holding dipswitch 215 depressed. Both relay coils in lighting relay 8 are then energized and current is supplied to the full beam lamps via filament monitor 228B and fuses 7 and 8.

Dipped Beam
When light switch 10 is in position 2, lighting relay 8 receives operating current from connection 56 of the light switch. The "upper" coil of lighting relay 8 is energized and contact is made between connections 30 and 56b of the relay.

Current is then supplied via connection 56b of lighting relay 8 to dipped beam lamps 12 via filament monitor 228B and fuses 5 and 6.

When dipped beams are switched on, current for the parking lights is supplied via light switch connection 58.

Filament Monitor
If one of the full or dipped beam lamps breaks, the relay in the filament monitor will operate and connection C2 will be grounded. Since connection 5 on pictogram 213 receives positive voltage, the indicator lamps for front lighting and the central warning lamp will light up, see Pictogram-Filament monitor.

Lights-on Indicator Lamp
Cars for certain markets have an indicator lamp (47V) which shows when the headlamps are switched on. The indicator lamp is supplied with current via connection 58 of light switch 10.