To replace the headlight switch in the Navajo, you will first want to disconnect the battery ground cable. To turn on the headlights, pull knob to the "on" position and then press the release button to pull off shaft and knob assembly. Afterward, remove the finish panel of the instrument panel, unscrew the mounting nut, and disconnect the switch from the instrument panel. Subsequently, detach the wiring connector from the switch. To install, connect the headlamp switch wiring connector, position the switch in the instrument panel and secure it with the mounting nut. To install the headlamp switch knob and shaft assembly, reinstall the instrument panel finish panel and push the shaft into the switch until it locks into place. Reattach the battery ground cable and check for headlight switch operation.