Non AC engine wiring harness in an AC car- for heat…

Discussion in 'The Bench' started by George D., Nov 9, 2021.

  1. George D.

    George D. Platinum Level Contributor

    Replaced my engine harness with a non air harness. The car is an AC car. What wire/ wires do I need to bypass to get my heat/ blower motor to work?
    Thank you.
     
  2. copperheadgs1

    copperheadgs1 copperheadgs1

    I think getting the AC harness was the better choice. Then you plug in everything normal.
     
  3. George D.

    George D. Platinum Level Contributor

    I know. I wanted to drive the car this summer and I stumbled upon a non AC harness for short money. I still have my AC harness (I think).
     
  4. Dano

    Dano Platinum Level Contributor

    I'll have the A/C harness off the Gold sunroof Skylark (no idea what condition it's in) if your non-A/C harness is in good condition & you want to trade.
     
  5. BrunoD

    BrunoD Looking for Fast Eddie

    I have a few AC engine harnesses,they are not that expansive.How's $50.00 plus actual shipping cost sound to you?Bruno.
     
  6. ToddsGS

    ToddsGS Founders Club Member

    You could run a wire directly from your switch to the Blower Motor (Might be a good idea to incorporate a relay though) - This will give you Full Speed but may be better than nothing.
    Otherwise a NON A/C car utilizes the Blower Motor Resistor that's inside the car.

    An A/C also has it's own Blower Motor Resistor as well as a Relay that's on the Firewall. IF you still have the Relay you may be able to utilize that some how to at least get High Speed to work (which is essentially a full 12 volts so just a regular wire going directly to the Blower Motor in a sense)

    It's tough to make it work the way it did after switching harnesses because they're wired totally different between the two combinations.
     
    Dano likes this.

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