Factory A/C in 1967-1972 Darts

YY1 said

I've rebuilt a couple of the slider switches by melting off those pins on the back (or filing them so they allow the rear cover with the nipples to come off. I agree about being extremely careful with those nipples. Then separating the "wafers", being sure to keep them in the proper order, and oriented correctly. I believe I used locksmith graphite to lubricate them, then put them back together and either re-melted the pins or tapped, threaded and machine screws.

They came out great and easy to operate.

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I have done that successfully a couple of time too. Here in Az if the car was sitting out in the desert chances are that plastic is so brittle it will shatter with just the tapping operation. Now that I understand that physically all these switches are the same it is possible to buy the cheaper C body switches and a bit of rewiring you can make them work perfectly. The '66 Valiant was a '65/'66 only switch that NOS was over $400... nope. NOS C Body switch for $90, open it up like you said and bit of rework on the contacts and it works just fine.