Midyear A/C wiring question - NCRS Discussion Boards

Midyear A/C wiring question

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  • Brandon K.
    Expired
    • April 1, 1997
    • 474

    Midyear A/C wiring question

    Hi All,

    I'm in the process of hooking up the dash wiring on my 67 small block w a/c. I have a question about the fan switch wiring that I'm hoping someone can answer:

    The brown wires to the fan switch (part of the heater system) plugs into another brown wire from the a/c harness. On the wire from the a/c harness there is a "hookup" for an extra wire, but I cant find anything that seems to belong there. I studied the wiring schematics, but have come up empty. I just want to confirm that nothing else is supposed to plug in there, or if there is, can someone please specify what that is?

    btw, these are repro wiring harnesses, if that makes a difference... unfortunately I no longer have the originals :-(

    THANKS!
    Brandon
  • William C.
    NCRS Past President
    • May 31, 1975
    • 6037

    #2
    Re: Midyear A/C wiring question

    What color is the wire you are trying to find a home for?
    Bill Clupper #618

    Comment

    • Brandon K.
      Expired
      • April 1, 1997
      • 474

      #3
      Re: Midyear A/C wiring question

      Originally posted by William Clupper (618)
      What color is the wire you are trying to find a home for?
      Hi Bill, Thanks for your response.

      Its not that there is an extra wire, that I'm trying to find a home for, its that there is an extra inline terminal on the brown wire from the a/c harness (that attaches to the wiring going to the fan switch). Its possible that nothing else is supposed to attach to the brown wires-- or that this extra terminal is for another accessory, but I can't imagine what...

      Thanks again,
      Brandon

      Comment

      • Larry M.
        Extremely Frequent Poster
        • January 1, 1992
        • 2688

        #4
        Re: Midyear A/C wiring question

        Brandon:

        I believe this same question came up recently on the other corvette forum. The reply(s) was that it was not used for the factory air cars, but was used for standard HVAC. I will try to find the post and provide you more info later today or tomorrow (if needed).

        Or you can search the C2 Section of CF yourself under postings by "62jeff". As I recall, there were a number of color photos included of the wiring and various connectors.

        Larry

        Comment

        • Peter L.
          Extremely Frequent Poster
          • May 31, 1983
          • 1930

          #5
          Re: Midyear A/C wiring question

          Brandon - If I'm looking at the right thing in the 1967 AIM, UPC C60, SHEET E9, it looks like the brown wire to the switch has a pigtail with a connector that should have a brown wire from the Fuse Panel connected to it. The brown wire from the Fuse Panel is part of the REG PRODUCTION WIRING (dashed line). Pete

          Comment

          • William C.
            NCRS Past President
            • May 31, 1975
            • 6037

            #6
            Re: Midyear A/C wiring question

            Pete, you and I are reading it the same way.
            Bill Clupper #618

            Comment

            • Brandon K.
              Expired
              • April 1, 1997
              • 474

              #7
              Re: Midyear A/C wiring question

              Gentlemen, thank you for your responses and sorry for the confusion on this.

              there are two brown wires to the back of the switch. One is from the production harness (I assume thats the one that goes to the fusebox) and the other terminates about 6 inches away in a female connector. There is a brown wire in the a/c harness which I assume is from the switch on the evap box. That wire terminates in a double connector- one side fits into the female to the switch, but that leaves one (a shielded male) bare. Just wanting to make sure that this is proper.

              Larry: I looked on "the other" website and found a question about wiring in a '64-- Is that what you were referring to? If not, I'd really appreciate if you would find the proper thread for me.

              Thanks again,
              Brandon

              Comment

              • William C.
                NCRS Past President
                • May 31, 1975
                • 6037

                #8
                Re: Midyear A/C wiring question

                The wire from the production harness (runs to the fuseblock) is the one that should plug into your open connector. I'm looking at a '67 C-60 AIM, and it's on page E-8 in the C60 section.
                Bill Clupper #618

                Comment

                • Bill C.
                  Expired
                  • December 1, 1991
                  • 177

                  #9
                  Re: Midyear A/C wiring question

                  On my 67 air car the red wire to the horn relay is not in the harness but instead is exposed with the fuse block to the relay with a fuse holder in line.........................didn't mean to confuse the issue but jumped into the wiring discussion anyhow....................Bill #20328

                  Comment

                  • Brandon K.
                    Expired
                    • April 1, 1997
                    • 474

                    #10
                    Re: Midyear A/C wiring question

                    Hi Bill, Thanks I couldnt find that detail in the AIM, but I'll look again.

                    Regards,
                    Brandon

                    Comment

                    • Brandon K.
                      Expired
                      • April 1, 1997
                      • 474

                      #11
                      Re: Midyear A/C wiring question

                      Hi Bill (Carpenter). Yes, thanks. I was referring to the inside dash wiring. I have the same red wire in the engine compartment, but I appreciate the response all the same.

                      Brandon

                      Comment

                      • Peter L.
                        Extremely Frequent Poster
                        • May 31, 1983
                        • 1930

                        #12
                        Re: Midyear A/C wiring question

                        Bill - That is exactly what I'd expect to see on the 67 C60 wiring. Pete

                        Comment

                        • Brandon K.
                          Expired
                          • April 1, 1997
                          • 474

                          #13
                          Re: Midyear A/C wiring question

                          Originally posted by William Clupper (618)
                          The wire from the production harness (runs to the fuseblock) is the one that should plug into your open connector. I'm looking at a '67 C-60 AIM, and it's on page E-8 in the C60 section.
                          Thanks for pointing this page out Bill. Now it looks familiar ... I remember looking at this a couple years ago when I originally installed the wiring. Now I just need to figure out if I did it correctly ;-)

                          BK

                          Comment

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