Turn Signals: Description and Operation

TURN SIGNAL AND HAZARD LAMPS

The turn signal system consists of:
- the lighting control module
- the multi-function switch (13K359)
- the turn signal miniature bulbs (13465)
- circuit wiring and circuit protection

Turn signal system operates as follows:
- Power is supplied to the multi-function switch through instrument panel fuse 3 (bA). This fuse is hot in RUN.
- The lighting control module is connected to the turn signal switch of the multi-function switch.
- Ground is provided to the lighting control module and the turn signal miniature bulbs through Circuit 57 (BK).
- Turn signal functions are performed by double filament bulbs in lamp assemblies located next to the headlamps.
- The turn hazard function utilizes the second filament of the appropriate bulb(s).
- With the multi-function switch in the right turn position, power is supplied to the RH front and rear turn signal miniature bulbs and the RH turn indicator in the instrument cluster (10849).
- With the multi-function switch in the left turn position, power is supplied to the LH front and rear turn signal miniature bulbs and the LH turn indicator in the instrument cluster.

Hazard Warning Flasher Switch
The hazard warning flasher switch (part of multi-function switch) is located on the top of the steering column tube (3514) forward of the steering wheel (3600).
- The switch should cycle smoothly from OFF to ON by pressing and releasing the switch top.
- The switch should produce an audible click when it toggles from one state to another.
- The switch should extend markedly further above the column when the switch is ON than it does when it is OFF.

When the hazard switch is in the ON position, the four turn signal lamps should be flashing. Also, the two turn indicators in the instrument cluster should be flashing simultaneously.