6v positive ground to 12v negitive ground - Hot Rod Forum : Hotrodders Bulletin Board
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Old 07-19-2009, 02:41 PM
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6v positive ground to 12v negitive ground

I have a 48 Plymouth special deluxe and i am very interested in converting to a 12v negative ground system and dont know where to start im not used to the older cars its a new a venture for me, I would really appreciate if someone could help me out. thank you in advance

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Old 07-19-2009, 03:16 PM
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.......keeping the same engine/gauges - if so, you will have some problems. Starter will run backwards though a 6VDC starter will work on 12VDC - as long as polarity is right, generator - will need to be replaced or better yet, install an alternator, gauges will need to be replaced or modified along with all senders. The lights - they don't care except they need to be 12VDC, the ignition system, will need a different and 12VDC coil. New condenser for neg ground, tho the points don't care either. New 12VDC ballast resistor. Radio - wont work (if it has one).

Now, if you are changing the drive line to something modern - it will all be neg ground - but the gauges and senders still need to be changed
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Old 07-20-2009, 07:21 PM
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Could i Just keep everything but the generator the same and use a voltage box to drop all of the original wiring and everything back to the 6v pos. ground i dont mind everything on the 6v it runs and works fine. i just would like some modern accessories. i looked and i found to use a 10SI alternator. instead of the generator
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Old 07-20-2009, 09:29 PM
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Go back and read my previous post - it will tell what will or wont happen
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