Anyway....the switch is shot and I what I'm hearing is "don't go NOS or Used". Sooooo.....I guess we'll have to wait for Blazer unless someone's got another source for these.
Sometimes I don't know how I ever put up with the problems I have with my 63 Classic, getting parts!
My column switch got intermittent on me, and I ended up rebuilding the switch myself with a junk spare that was as bad as the original.
The switch comes apart easily, but man, take photos and make drawings! Those little slippery/greasy nylon brass and rubber parts are nasty to puzzle out if you screw up.
I wiped off (not degreased, lazy) the little switch contact pieces, and buffed them square again with sandpaper (I forget grit; fine) on a flat block. Touched up the contacts in the body part. Packed it all full of chassis grease and it's fine now.
I did the same to my headlight switch, rebuild contacts then added relays, brakelight switch is a Ron Francis with relay added, ignition switch I had to take apart and fix all the contacts (and manually re-key with a handful of junk keys -- car came without keys -- 1988, before internet and Peter Stathes!), only the fan switch hasn't been pried apart and repaired -- yet. Haven't taken apart and fixed oil and water sensors but somehow I feel that's coming up.
On the 70 Hornet, I had to disassemble the intermittent wiper switch, square all the contacts, wipe the crud off the potentiometer, grease pack and epoxy back together again.
I hope to drive my Classic another 18 years... then it will really be old. THere's a guy who drives an original! never restored! Ford Model T to Bob's Big Boy in Burbank; it's the most rattle-trap looking thing you can imagine, but runs. Puts a coffee can under it to catch the drips. All sorts of toggle switches drilled into the door (they look older than my Rambler). The turtle deck door has a bailing wire latch, and is filled with parts, tools, pieces. Seats are rotted with wood slats and blankets. Coolest damned thing in the place! 80+ years old! My Rambler could do worse than that!