65 Dart Heater AC Fan Problem

I have seen differences in the elc connections on the vac switches. The picture with the darker connections and small screws holding switch together came out of my 66 barracuda with a.c.. the other vac switch has a different elc connections. I don't know what the difference is. I tried that switch in my 66 Barracuda and the a.c. did not work. This might be your problem.

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