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  • #1

    12 volt wiring diagram?

    Hi all,

    The restoration continues... does anyone know where I can find a complete vehicle-wide 12-volt wiring diagram? I've been searching all over the web and I've found several parts of the info, but not a complete one and a couple conflict with one another. Any assistance is appreciated. Thanks.

    Pat
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  • #2
    If we are talking about a Model A wiring diagram and if you have one for a 6 Volt system, it is the same for 12 volt. If you convert to negative ground just change the symbols for the battery on the diagram. Most Model A manuals and parts catalogs have wiring diagrams.
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    • #3
      The wiring diagram would be the same except that the battery terminals are switched as are the coil primary leads and ammeter leads.
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      • #4
        Originally posted by Pklarkin View Post
        Hi all,

        The restoration continues... does anyone know where I can find a complete vehicle-wide 12-volt wiring diagram? I've been searching all over the web and I've found several parts of the info, but not a complete one and a couple conflict with one another. Any assistance is appreciated. Thanks.

        Pat
        And remember, you CAN use a 6 Volt Model A Generator, to power a 12 Volt System!
        KDad Easy
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        • #5
          We have the wiring diagrams thread in the tech forum,,, just look!
          3~ Tudor's & 1~ Coupe
          Henry Ford said,
          "It's all nuts and bolts"
          "Start by doing what's necessary; then do what's possible; and suddenly you are doing the impossible."
          Mitch's Auto Service ctr
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          • #6
            Originally posted by Pklarkin View Post
            Hi all,

            The restoration continues... does anyone know where I can find a complete vehicle-wide 12-volt wiring diagram? I've been searching all over the web and I've found several parts of the info, but not a complete one and a couple conflict with one another. Any assistance is appreciated. Thanks.

            Pat
            How much are you changing it from stock? As mentioned the wiring is the same for 6 and 12 volts IF everything else is stock.
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            • #7
              Hi Mike,

              I'm doing a frame-up restoration and decided to use all-new wiring as part of the job, so I was looking for a reference that had all of the wiring including the differences between the standard 6v and 12v installation. I looked around some more and found a great write-up and diagrams at

              http://cedarcreekas.org/TechTopics/1...rn_Signals.pdf.

              I recommend that document to anyone doing a total rewire to a 12v system - great call-outs regarding the differences between 6v and 12v. The wiring is in now and I think it's sparking well all the way through to the plugs so I think I'm ok there. Thanks to all for the help. Next issue is that it's not turning over yet, but that's the job for today....

              Pat
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              • #8
                Pat
                That is a nice write up on the conversion, thanks for posting it.

                Does anyone here on the VFF belong to the cedar creek club??
                3~ Tudor's & 1~ Coupe
                Henry Ford said,
                "It's all nuts and bolts"
                "Start by doing what's necessary; then do what's possible; and suddenly you are doing the impossible."
                Mitch's Auto Service ctr
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                • #9
                  That is a nice write up. Can u get permission to sticky?
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                  • #10
                    Originally posted by dmdeaton View Post
                    That is a nice write up. Can u get permission to sticky?
                    It's already placed in the tech forum for easy reference.. ( 6v to 12v conversion)

                    to many sticky's tend to clog up a site IMO
                    here is the link

                    https://www.vintagefordforum.com/for...onversion-info
                    3~ Tudor's & 1~ Coupe
                    Henry Ford said,
                    "It's all nuts and bolts"
                    "Start by doing what's necessary; then do what's possible; and suddenly you are doing the impossible."
                    Mitch's Auto Service ctr
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                    • Bottom

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