Voltage applies to the turn signal switch through the turn signal flasher at all times through the HAZ circuit breaker.

With the turn signal switch in the left hand turn position, voltage applies to both the left hand turn indicator and the left hand front park/turn lamp CKT 14 (LT BLU). Voltage also applies to the upfitter connector.

The lamps go on immediately. The lamps begin to flash when the current flow heats up the timing element in the flasher. The element repeatedly opens and closes the circuit.

If the turn switch assembly is in the right turn position, voltage will apply to the right hand turn lamps in the same manner.

Voltage applies at all times through the HAZ circuit breaker and the turn signal flasher to the normally open contacts of the hazard switch. When the hazard switch is ON, voltage applies to both front and rear turn lamps. All of the turn lamps and both turn indicators flash ON and OFF.

Voltage applies at all times through the TL-MKR circuit breaker. Voltage to the headlamp switch supplies at all times through the PNL circuit breaker and CKT 1040 (ORN). When the headlamp switch is in the PARK or HEAD position, voltage supplies through CKT 13 (LT BLU) to the coil of the lighting relay in order to energize the relay. Voltage then passes through the normally open contacts of the relay through CKT 9 (BRN) to the park lamps.