temp
I manually disable my WI system when temps drop below about 50 - 60 deg F, depending on humidity. I can notice the car does not run as well in cool temps if the WI is on --- too much of a good thing I believe.
I have also considered exactly the same approach but have not gotten around to making the necessary changes. I just have an "WI arm" switch that controls power to the pump and relays and do the same thing you are suggesting.
Larry
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