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    1948 Plymouth special deluxe coupe rewiring to 12 volts

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    Lbrauer

    Posts : 6
    Join date : 2010-09-21
    Age : 63
    Location : Alvin, Tx.

    1948 Plymouth special deluxe coupe rewiring to 12 volts

    Post  Lbrauer on Mon Oct 04, 2010 6:34 pm

    Lbrauer wrote:
    I have a 1948 Plymouth Special Deluxe Coupe that I have to change from 6 volt positive ground to a 12 volt negative ground in order to install an air conditioner what all do I need to replace besides the wireing and the generator. I don't know if I have to put reducers on the guages, horns and change the regulator. I know I had to do this to the 52 F1 ford truck that I and my son did some years back but for the life of me I can't remember how we did it.
    Thanks for the feedback'
    Larry Brauer
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    charger

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    Age : 42
    Location : manitoba

    Re: 1948 Plymouth special deluxe coupe rewiring to 12 volts

    Post  charger on Tue Oct 05, 2010 10:25 am

    positive ground!! oh boy! as soon as you change it to negative ground i believe your guages will read wrong (opposite),or you might just fry them ?? you will have to put reducers on the guages, i`m a wiz at electrical but never played around with positive ground systems before.
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    Darkside Dave
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    Re: 1948 Plymouth special deluxe coupe rewiring to 12 volts

    Post  Darkside Dave on Tue Oct 05, 2010 10:58 am


    I think I would go with new gauges. There are lots of aftermarket kits out there to make it look stock if that's what you are going for. You can also take the gauge panel apart and install the guts of modern gauges in them. There are a lot of guys who have done what you are doing with the old 6V POS. Ground Ford trucks and it seems most of them did it with just a voltage reducer. I think that may have worked because some of the gauges are just a thermal device responding to voltage levels from the sending devices. It may also be possible to reverse the terminal connections on the individual gauges as most of them have their own individual connections on the back side of the panel. You might try doing a search for other forums that specifically cater to that particular model and vintage car.

    Later Man...


    Last edited by Darkside Dave on Tue Oct 05, 2010 4:30 pm; edited 1 time in total


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    Lbrauer

    Posts : 6
    Join date : 2010-09-21
    Age : 63
    Location : Alvin, Tx.

    rewiring

    Post  Lbrauer on Tue Oct 05, 2010 1:06 pm

    I know back when I got my 52 f1 ford truck it was positive ground and we changed it from 6 volts to 12 volts and had to reduce everything in the truck but for the life of me I can't seem to remember how we did it. I know that the starter will still work but not much more. If anyone out there has done this before please let me know what the procedure is as I have for gotten.
    Thanks for the responce,
    Larry cyclops
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    Grumpyoldman
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    Re: 1948 Plymouth special deluxe coupe rewiring to 12 volts

    Post  Grumpyoldman on Tue Nov 09, 2010 11:40 pm



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