Turn Signal Lamps
With the Ignition Switch in RUN, BULB TEST, or START, voltage is applied through the TURN B/U Fuse and the Turn Signal Lamp Flasher to the normally closed pole of the Hazard Switch in the Turn Signal.With the Turn Switch in "LEFT," voltage is applied to the LH Turn Indicator, LH Front Side Marker Lamp, LH Front Turn Lamp, and LH Tail/Stop/Turn Lamps. They begin to flash when the current flow heats up the timing element in the Turn Signal Lamp Flasher. The flasher repeatedly opens and closes the circuit.
When the Headlamp Switch is in "OFF," the LH Front Side Marker Lamp is grounded through the Front Park/Turn Lamps. These lamps provide low resistance paths to ground. The Marker Lamp will flash with the turn Lamps. Since the voltage drop across the Marker Lamp is much higher than that across the other lamps, the lamps used for the ground path will not flash.
When the Headlamp Switch is in "PARK" or "HEAD," voltage is applied through the TAIL Fuse to the Headlamp Switch, Side Marker, Park. and Tail Lamps. If the Turn Switch is in "LEFT," the LH Front Side Marker Lamp will have voltage applied at both connections and will go off. When the flasher is open, the Side Marker Lamps will be grounded through the Turn Lamps and will go on. In this way, the LH Front Side Marker Lamp will flash on when the LH Front Park/Turn Lamp goes off, and off when the Turn Lamp goes on.
With the Turn Switch in "RIGHT," circuit operation is similar.