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fan speeds

  1. 85 EC fan high speed red wire question

    Heating & Air Conditioning Systems
    I'm working on the heating and AC controls in the 85. I am currently waiting on a new vacuum switch but have a wiring question on the unit. Darn flowmaster mufflers were so loud I had a terrible time hearing the vacuum leak at the controls. The 4 wire connector that plugs into the old style AC...