Hazard Warning Lamps: Description and Operation

HAZARD LAMPS
The hazard switch is in the center of the instrument panel to the right of the instrument panel cluster. The hazard switch controls the operation of the hazard lamp circuit. Press the hazard switch in order to cause the turn/hazard flasher to disengage the turn signal circuit. This will engage the hazard lamp circuit.
Voltage applies at all times through the HAZ fuse to the normally open contacts of the hazard switch. With the hazard switch pressed, the contacts close.
When the contacts close voltage applies through the turn/hazard flasher, back through the hazard switch, to the following components:
- The turn indicators in the instrument panel cluster
- The front turn signal lamps
- The rear turn signal lamps

The lamps are ground permanently. The lamps light immediately and start to flash 80-90 times a minute while the solid state timing unit in the turn/hazard flasher operates. The turn/hazard flasher is located on the back of the junction block. The junction block is located beneath the left side of the instrument panel and is mounted to the left front side door hinge pillar. The hazard lamp circuit operates regardless of the position of the ignition switch.

Press the hazard switch again in order to disengage the hazard lamp circuit. This returns the turn/hazard flasher to the turn signal mode.

Refer to Hazard and Turn Signal Flasher Replacement for turn/hazard flasher removal and installation procedures.