E2011 Dipped headlamps

Description

The car is equipped with two dipped beam headlamps.

The dipped beam headlamps are switched on through the steering column switch unit by turning the special ring nut in the position after the side lights.

A special relay - on the right hand side, under the dashboard - keeps the dipped headlamps on with the main beam headlamps on.

The circuit is protected by two fuses, one for the right hand headlamp, one for the left hand headlamp.

The dipped beam circuit also enables the headlamp alignment device and rear fog lamps for operation.

Description of operation

The circuit for the dipped beam headlamps is operated by the steering column switch unit H5.

By placing the switch in the dipped beam position, the line which supplies the headlamps F10 (left) and F11 (right) is supplied controlled by the ignition. Each circuit is protected by a fuse for the junction unit B1: F5 for the left headlamp and F4 for the right one.

With the dipped beam headlamps on, this supply passes through the dipped beam headlamps maintenance relay/remote control switch J45.

If the lights are switched from dipped to main beam, the suply is interrupted, but it is replaced by the one from pin 87 of switch J45: the signal for switching on the main beam headlamps, in effect, energizes the relay (pin 86) which switches the supply to the direct line (maxifuse J/B2 of B5 to 2/99 or B99 from 2/99) which thereby also keeps the circuit for the dipped headlamps and the main beam headlamps on.

The supply line for the left lamp also acts as a go ahead signal for the headlamp alignment ( Wiring diagram E3080 HEADLAMP GEOMETRY ADJUSTMENT ) and the rear fog lamps (check device inside the rev counter module E15) ( Wiring diagram E2031 REAR FOG LAMP ).

Wiring diagram

Components

Component location