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I'm helping a widow to fix a 1955 Mercury. Her husband had reversed the polarity, so now it is 6 volt negative ground. It does not charge at all. So I plan to make it positive ground again. Are there connections that should be reversed, except for the battery?
Can you use a 6 volt positive ground charging relay in a negative ground car?
1955 Mercury
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If you ground the correct post yes. But I'd bet money it's wired wrong and the generator wasn't polarized.
Frank/RebopBristol, In ( by Elkhart) 
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When I bought my 55 club sedan it was 6 volt negative ground. All I did was reverse the battery cables and repolarize the generator. I'm with Frank, I'll bet the regulator doesn't work anymore.
 Dennis in Lititz PA
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remind me again how to polarize the generator, I've never done it even though its been of several times
 moz. geelong victoria australia. graduate 1980, bus, truck, car, hot rod, boat, submarine, hovercraft, hydrafoil, firetruck, mobile home, jet, helicopter, cruise ship, motorcycle, bicycle, santa's sleigh, clock, alloy bullbar, alloy fuel tank, lens, dr who's tardis, matter - anti matter warp drive buffer & y-block lover
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When reinstalling a regulator, disconnect the field wire from the terminal at the regulator. Hook up the battery cable. Momentarily touch the field wire to the bat terminal at the regulator. Reconnect the field wire to the field terminal. You're done.
Dennis in Lititz PA
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thanks Dennis, I've wondered why it needed to be done, I thought it must have something to do with charging, but my generator seems to charge fine.
moz. geelong victoria australia. graduate 1980, bus, truck, car, hot rod, boat, submarine, hovercraft, hydrafoil, firetruck, mobile home, jet, helicopter, cruise ship, motorcycle, bicycle, santa's sleigh, clock, alloy bullbar, alloy fuel tank, lens, dr who's tardis, matter - anti matter warp drive buffer & y-block lover
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