Circuit Operation - Exterior Lights

CAUTION: Halogen bulbs contain a gas under pressure. Handling a bulb improperly could cause it to shatter into flying glass fragments. To help avoid personal injury:
^ Always wear eye protection when changing a halogen bulb.
^ Handle the bulb only by its base. Avoid touching the glass.
^ Do not drop or scratch the bulb. Keep moisture away.
^ Place the used bulb in the new bulb's carton and dispose of it properly. Keep halogen bulbs out of reach of children.

PARK, MARKER, TAIL AND LICENSE LAMPS
Voltage is applied at all times from the PARK LPS Fuse to the headlamp switch through circuit 1340. With the headlamp switch is in the PARK or HEAD position, voltage is applied to circuit 9. Current flows through circuit 9, to all park, side marker, tail and license lamps turning them on. The only lamps that receive current from circuit 9 and do not turn on are the turn filaments in the park/turn lamps. They do not turn on because the voltage drop across the front side marker lamps is much greater than that across the turn lamp filaments.

TURN LAMPS
With the Ignition Switch is in the RUN, BULB TEST or START position, voltage is applied from the TURN Fuse to the normally closed pole of the turn signal switch through circuit 539, which feeds the hazard lamp/turn signal lamp flasher through circuit 1508. When the turn signal switch in the TURN LEFT position, voltage is applied from the turn signal switch to circuit 14 at terminal A7 of connector C201 and to circuit 18 at terminal E7 of C201. Voltage is the applied to the LH front turn, rear turn and indicator lamps. They flash on and off as current flow heats the timing element in the hazard lamp/turn signal lamp flasher, and it continuously opens and closes the circuit (for RH turn lamps, circuit 15 terminal A6 of C201 and circuit 19 terminal E6 of C201 are used). With park lamps on and turn lamps on, voltage is applied to both terminals of the front side marker lamp causing it to be off. When the front turn lamp is off, voltage is applied to only one terminal of the marker lamp, causing it to flash on. The turn lamp and the marker lamp continue to flash on and off out of sequence until the turn signal switch is turned off.

HAZARD LAMPS
Voltage is applied at all times from the HAZARD Fuse to the normally open poles of the Hazard Switch in the turn signal switch through circuit 1840. With the hazard switch in the HAZARD position, voltage is applied to all of the front turn, rear turn and indicator lamps causing them all to flash ON and OFF.

STOP LAMPS
Voltage is applied at all times from the STOP LAMP Fuse to the stop lamp switch through circuit 140. When the brake pedal is depressed, voltage is applied from the stop lamp switch to circuit 17. Voltage is then applied to the turn signal switch to turn on the LH and RH stop lamps and applied to the Center High Mounted Stop Lamp (CHMSL), turning on the CHMSL.