There have been numerous posts here about the replacement hvac controls on the '77-up cars not lasting, or even working from the get-go. There is a lot of amperage going thru the switch at times, and it seems to melt the cheapo ones fairly quickly. Don't know how you could tell the difference between the good uns and the bad uns just by looking at them, tho.
Glad you found some sort of solution, anyway....that's "Southern Engineering" at it's best!!
just kiddin! Hey..if it works, it works.
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Joel Adams
C3VR Lifetime Member #56
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"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"