Turn Signals: Description and Operation

When the ignition switch is in the ON or the START position, voltage is applied through the TURN LPS fuse to the normally closed contacts of the hazard switch. A single flasher internal to the hazard switch performs the following functions:
^ Operates the turn signal
^ Operates the hazard flasher

When the turn switch is in the LEFT position, voltage is applied to the following components:
^ The left turn indicator
^ The left front park/turn lamp
^ The left rear turn lamp

The lamps immediately turn ON and flash as the flasher opens and closes the circuit. If a bulb is in need of replacement, the turn lamps will flash at twice the normal rate.

The voltage applied to the left front park/turn lamp is also applied to the left front marker lamp. When the turn/headlamp switch assembly is OFF, the left and right front marker lamps find a path to a ground through the left and right front park/turn lamps. The front park/turn lamps provide low resistance paths to ground. The left front marker lamp flashes with the turn lamps. The lamps used for the ground path will not flash because the voltage drop across the marker lamp is much higher than the voltage drop across the other lamps.

When the headlamp switch is in the PARK or the HEAD position, voltage is applied to the following components:
^ The marker lamps
^ The park lamps

When the turn switch is in the LEFT position, the following conditions exist:
^ The left marker lamp has voltage at both connections.
^ The left marker lamp does not light.

When the flasher stops the voltage to the turn lamp, the following conditions exist:
^ The marker lamp is grounded through the turn lamp.
^ The marker lamp lights.

The left front marker lamp flashes ON when the turn filament of the left front park/turn lamp turns OFF. The left front marker lamp flashes OFF when the turn filament of the left front park/turn lamp turns ON.

When the turn switch is in the RIGHT position, voltage is applied to the following components:
^ The right turn indicator
^ The right front park/turn lamp
^ The right rear turn lamp

The lamps immediately turn ON and flash as the flasher opens and closes the circuit. If a bulb is in need of replacement, the turn lamps will flash at twice the normal rate.

The voltage applied to the right front park/turn lamp is also applied to the right front marker lamp. When the turn/headlamp switch assembly is OFF, the left arid right front marker lamps find a path to a ground through the left and right front park/turn lamps. The front park/turn lamps provide low resistance paths to ground. The right front marker lamp flashes with the turn lamps. The lamps used for the ground path will not flash because the voltage drop across the marker lamp is much higher than the voltage drop across the other lamps.

When the headlamp switch is in the PARK or the HEAD position, voltage is applied to the following components:
^ The marker lamps
^ The park lamps

When the turn switch is in the RIGHT position, the following conditions exist:
^ The right marker lamp has voltage at both connections.
^ The right marker lamp does not light.

When the flasher stops the voltage to the turn lamp, the following conditions exist:
^ The marker lamp is grounded through the turn lamp.
^ The marker lamp lights.

The right front marker lamp flashes ON when the turn filament of the right front park/turn lamp turns OFF. The right front marker lamp flashes OFF when the turn filament of the right front park/turn lamp turns ON.