I hate to pay a lot for parts, and not being able to find them is close behind...
I deal with aircraft, and love a mod/fab challange, so I am looking for a way to adapt a current switch unit to our "old" cars, '70-'72 AC cars first, but more later.
As the info comes in, I will update the list as I find them.
I see where others have found them for about 15 bucks, but I will keep on it, for when those sources dry up.