Principles of Operation

Principles of Operation

Steering Column Switches
The steering column switches include the ignition switch and the multi-function switches (high beam/low beam, flash-to-pass, turn signal and windshield wiper). The ignition switch is controlled by the ignition lock cylinder with a key. When the ignition lock cylinder is turned using the key, the ignition switch is rotated to the selected position and allows the ignition switch to send voltage to specific components.

The multi-function switch controls the various components electrically. The headlamp switch sends constant voltage to the headlamps when placed in the ON position, while the flash-to-pass is a momentary switch used to send voltage to the headlamp high beams only. The headlamp high beam/low beam switch sends voltage to the low or high beam headlamps while the headlamps are on.

The turn signal switch portion of the multi-function switch operates the left and right turn signals. The windshield wiper switch function uses a ground signal to activate the various wiper modes and the wiper/washer.