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Re: Vacuum switch on the A/C control
Only problem is that I'm using a 3-port replacement control in a '70 where I'm going to use the proper '70 routing (heater valve off a T under the hood).
I just don't know which of the 3 ports correspond to the older 2-port units.
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1970 GMC Sierra Grande Custom Camper - Built, not Bought
1969 Pontiac 2+2 427/390 4-speed Coupe
1969 Pontiac 2+2 427/390 4-speed Convertible
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