Operation

Direction Indication/Hazard Warning Lamps

OPERATION

Direction Indicator Lamps
Feed from the positive battery terminal (C0192) is supplied to fusible link 3 of the engine compartment fuse box (C0632) on an R wire. Fusible link 3 (C0571) is connected to the ignition switch (C0028) by an N wire. When the ignition switch is turned to the 'ignition' position, current flows across the switch (C0028) to fuse 8 of the passenger compartment fuse box (C0588) on a G wire. Fuse 8 (C0580) provides an ignition feed to the hazard warning switch (C0096) on a G wire. Current flows across the switch (C0096) to the flasher unit (C0580) on an LGK wire. The flasher unit is located in the passenger compartment fuse box and is earthed (C0587) on a B wire. The energized flasher unit (C0580) provides a feed to the indicator switch (C0036) on a LGN wire.

LH Turn
When the direction indicator switch is moved to the LH turn position, current flows across the switch (C0036) to the following:
^ The LH front direction indicator lamp (C0009) on a GR wire.
^ The LH side repeater (C0013) on a GR wire.
^ The LH rear direction indicator lamp (C0121) on a GR wire.
^ The instrument pack (C0233) on a GR wire.
^ The trailer pick-up (C0499) on a GR then Y wire.

All are earthed on B wires, except the trailer pick-up (W then B wire).

RH Turn
When the direction indicator switch is moved to the RH turn position, current flows across the switch (C0036) to the following:
^ The RH front direction indicator lamp (C0011) on a GW wire.
^ The RH side repeater (C0012) on a GW wire.
^ The RH rear direction indicator lamp (C0125) on a GW wire.
^ The instrument pack (C0233) on a GW wire.
^ The trailer pick-up (C0499) on a GW then G wire.

All are earthed on B wires, except the trailer pick-up (W then B wire).

Hazard Warning Lamps
Feed from the positive battery terminal (C0192) is supplied to fusible link 4 and fuse 7 of the engine compartment fuse box (C0632) on an R wire. Fusible link 4 (C0574) provides a constant battery feed to the Central Control Unit (CCU) (C0593) and fuse 14 of the passenger compartment fuse box (C0587) on an NW wire. Fuse 14 (C0589) is connected to the hazard warning lamp housed within the instrument pack (C0230) by a P wire. Illumination of the hazard warning lamp (C0233) is controlled by the hazard warning switch (C0096) on an SY wire.

Fuse 7 of the engine compartment fuse box (C0576) provides a constant battery feed to the hazard warning switch (C0096) on an NO wire. When the hazard warning switch is pressed, current flows across the switch (C0096) to the flasher unit (C0580) on an LGK wire. The flasher unit (C0587) is earthed on a B wire. The energized flasher unit (C0580) returns a feed back to the hazard warning switch (C0096) on an LGN wire The hazard warning switch (C0096) is now able to provide feeds to both the LH and RH direction indicator circuits simultaneously on GR and GW wires respectively.

Fuse 7 of the engine compartment fuse box (C0576) also provides a constant battery feed to the hazard warning relay (C0581) on an NO wire. The earth path for the hazard warning relay is controlled by the CCU (C0593).