3239271 - E2012 MAIN BEAM HEADLAMPS - Functional description

Functional description

The main beam headlamps circuit is operated by the steering column switch unit H5 . When the switch is turned to the main beam position, or when the "flashing" contact is closed, the line which supplies the (left) F10 and (right) F11 headlamps receives a supply controlled by the ignition. Each circuit is protected by a fuse for the junction unit B1 : F7 for the left lamp and F6 for the right one. The suppy line for the left headlamp also sends a signal to the rev counter module E15 (pin 4 of connector B) to light up the "main beam headlamps on" warning light. The circuit for the main beam headlamps also provides a signal (from pin 4, connector F of B1 ) for keeping the dipped headlamps on when the main beam headlamps are on. (  See E2011  DIPPED HEADLAMPS )