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Headlamps, halogen

Headlamps, halogen



The main lighting of the car comprises main beam and dipped beam, number-plate lighting and parking lights.

It is turned on with the light switch in position 2 and the ignition in position OFF, ON, or ST. Switching between main and dipped beams is done with the dipswitch, the lever to the left of the steering wheel.

With the ignition in position OFF, ON or ST, a voltage of +X is supplied from the ignition switch to pin 16 of the light switch. When the light switch is turned to position 2 the power is fed to the dipped-beam relay (8) from pin 11 and to DICE pin 15 so that DICE will know the position of the switch. DICE grounds the relay (8), after which power is fed to the filament monitor (228b) and further to fuses (11 and 13) and to the dipped-beam lamps (12).

The dipswitch controls the main beam in two different ways: either "flash", with the dipswitch drawn to the spring-loaded position, or "main beam", with the dipswitch in a fixed position. In both cases the dipswitch is drawn towards the rim of the steering wheel.

Main beam is controlled by dipswitch (215) and light switch (10). If the light switch (10) is in position 0 and the switch (215) is on, +30 is fed to the main beam bulbs (11) via the filament monitor (228b) and fuses 10 and 12. The light switch (10) must be in position 2 for the main beam bulbs to shine continuously. DICE (628) then grounds the relay (8a) which supplies power to the main beams via the filament monitor (228b) and fuses 10 and 12.

If the light switch is in position 0 or 1 and the ignition is held in position ST, the dipped-beam relay will release after 20 seconds.

When the light switch is in position 2 and the ignition is ON, DICE puts “"Main beam ON"” onto the bus. The message is used by SID, which switches on the instrument lighting. The intensity of the light is decided by the setting of the rheostat (0-100%).

The light switch positions operate different lighting modes depending on how DICE is programmed. There are 3 different program alternatives. The reason for this is that different markets demand different lighting modes. When program alternative 1 is to be used, fuse 35 must first be removed.

The three alternatives when the ignition is set to ON are:

Alt.

Light switch positions



0

1

2

1

No main lights

Parking lights

Main and dipped beams

2

Dipped beam

Parking lights

Main and dipped beams

3

Dipped beam

Dipped beam

Main and dipped beams



If main beam is on and the ignition is turned to position OFF, or if the light switch is turned to any other position, the main beam will be switched off and must be turned on again.

With the ignition in position OFF, the programmed function is the same on all markets. No lights are on in position 0 and the parking lights are on in position 1.

Important

When changing a bulb, use one with the right output otherwise the components could be damaged.