Quote:
Originally Posted by NeilBlanchard
...that would only run the A/C when slowing the vehicle down, or at least not when accelerating or climbing a hill.
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...back in the early 1970's, I recall an aftermarket "add-on" switch (from Echlin?) that plugged in-line to the A/C-clutch, which disconnected the A/C compressor when the manifold vacuum dropped below some point--the idea was to cut-out the A/C during acceleration and heavy-load conditions.