One of the good parts of being a geezer is a decent lifetime collection of tools.
The fan speed switch on my trusty El Camino lost the speed I use the most. One step down from max hurricane blow. The fan blew fine at every other speed. No fancy touch climate control of computers to worry about, just a 4 position mechanical switch.
Four screws takes off the radio faceplate, four screws take out the fan control plate.
A slight wiggle and the switch is visible, and the connector pules off. Then all that is needed is removing a screw in a very hard to get to place. My 1/4 inch sockets fit right on, but no way to turn them as my shortest extension is too big. The photo is the new switch almost back in.
OK, what would be perfect is a 1/4 box end wrench! Go dig in the SAE wrench drawer in the far back, and lo and behold, a stash of tiny wrenches.
I am pretty sure these were my dad's set from his very limited tool collection. Why he had them I have no idea. A few turns of the 1/4 box end and the screw is out, and the $7.48 replacement switch is installed.
The old switch was labeled Made in USA. No such luck with any switch now days. I will order another one as a backup because I bet the Chinese crap switch will not last as long. It is a "Four Seasons" brand and the best switch on the market. The old switch only lasted 35 years and 362,000 miles. The don't make em like they used to.