headlight switch

Yes ^^^^

Pull the headlight switch knob all the way out, spray the shaft and switch port with PB Blaster or WD-40 if you don't want things to stink.

Work the headlight switch 25 times, soak it again, repeat.

Blow the switch and port out with compressed air, push the release button and the pull control shaft out.
I will take the air hose to it this afternoon!