General description

GENERAL DESCRIPTION

The intermittent direction indicators and hazard warning lights delineate the vehicle clearance.

The right or left direction indicators are turned on raising or lowering the lever on the steering column lever unit; the hazard warning lights (right and left indicators activated simultaneously) are switched on from the switch on the Check Panel.

The direction indicators operate when the ignition key is engaged, for the obvious safety reasons, they are supplied directly by the battery.

Two intermittent warning lights on the instrument cluster flash while the right and left indicators are operating. The hazard warning light indicates that these are operating by illuminating when they are turned on.

The circuit of the direction indicators is protected by a fuse and another fuse protects the circuit for the hazard warning lights.

FUNCTIONAL DESCRIPTION

The circuit is controlled by the hazard warning light and direction indicator flasher N13 to be found next to the fusebox.

The flasher, earthed at pin 31, is supplied at pin 30 directly from the battery via the line of fuse F1 of fusebox G1.

Pin 15R and 15L receive the signals (12V) from the lever unit B68 when the "key-operated" supply of the line protected by fuse F17 of box "A" and "B" is switched or from fuse F15 of box G1 "C", of G1 for turning on the right direction indicator (pin 15R) and the left one (pin 15L).

Pin HWS receives a signal (earth) when the hazard warning light switch in the Check Panel C16 is pressed.

Pins R and L send the intermittent supply signals for all the indicators: from pin R for those on the right, from pin L for those on the left, according to the following logic:

• only pin R (RH) if the signal reaches pin 15R
• only pin L (LH) if the signal reaches pin 15L
• both pins R and L if the signal reaches pin HWS.

This way operating the stalk of the lever unit B68 turns on the righthand indicators (E23, E9b and E19) or the left ones (E24, E9a and E20) and simultaneously the corresponding warning light on the instrument cluster C10 is turned on.

When the switch on the Check Panel C16 is pressed, the right and left direction indicators are supplied contemporaneously and also the special led (pin 3) inside C16 is supplied which lights up when the hazard warning lights are switched on. A second led (pin 3) illuminates the ideogram of the switch when the side lights are on - see section "Lighting of Controls and Indicators".