Never say never, but I've never seen any parts available, Rusty. You know for years these sold new for $6 or $7, and I'm sure very few people ever took one apart to rebuild it. In fact, it was widely known you could buy a brand new one from Western Auto for $4, remove the "universal" knob/rod and slip your AD knob/rod straight in there. It was the same switch, made by Delco and sold as a universal model. The only trick was you had to file a new notch for it as the lock tab was 45 degrees different. My truck has both of these notches and it originally came from California, so I'm certain some parts place out there sold the same switch. But things have changed.
From what I've seen only one part really wears out so to speak. That is the bakelite sliding block. The slot holding the knob/rod keeper wears and this lets the knob rod slide ever so further in. All it takes is one hard push of the headlight knob inward (which happens when the bakelite slider and the sliding detent pin lose lubricant) and pow...the back is knocked out. Once that happens, the switch is on borrowed time. I suppose you could rebuild the top piece with small brass screws (to replace the pins and rivets) if need be, but I've never seen one wear so far that these quit working. This switch had seen a decent amount of use when I got it, and you can see the contacts on the top plate are nowhere needing attention:
~ Jon 1952 1/2 ton with 1959 235 | T5 with 3.07 rear end
