Ignition Switch and Key

The ignition switch can be turned to four positions: ACCESSORY, OFF, ON, and START. See Fig..

Fig. 1, Ignition Switch Positions

The key can be inserted and removed only in the OFF position. The headlights (low beams), taillights, brake lights, road lights, clearance lights, turn signals, hazard warning lights, horn, CB radio, clock, and electric oil pan heater operate with the ignition switch in the OFF position, regardless of whether the key is inserted.

All of the components that are operable in the OFF position are operable in the ACCESSORY position, as well as the radio (if so equipped), mirror heat, air dryer, and backup lights.

Turn the key fully clockwise to the START position to start the engine. When the engine starts, release the key.

All electrical systems are operable in the ON position. The warning lights and the buzzer for low air pressure and low oil pressure operate until minimum pressures are built up.