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In general positive ground systems went out of production in the 1950's. All dents were made with negative ground... like new cars today. No dent would have been made with positive ground.
In general, a wire from the alternator to the positive side of the battery would be correct for negative ground.
Suggest you start with a volt meter and test the battery first to establish + and - polarity then start checking from there. Any energized power supply wire should show about +12 volts measured against a clean chassis ground or the negative post of the battery.
In general positive ground systems went out of production in the 1950's. All dents were made with negative ground... like new cars today. No dent would have been made with positive ground.
In general, a wire from the alternator to the positive side of the battery would be correct for negative ground.
Suggest you start with a volt meter and test the battery first to establish + and - polarity then start checking from there. Any energized power supply wire should show about +12 volts measured against a clean chassis ground or the negative post of the battery.
That's the thing, when i connected the hot wire from the amplifier to the negative battery and it powered up. Someone definitely converted this and I'm kind of in pickle as how to undo do it.
I've been told a if a normal 12v battery gets dead enough it's possible to charge it back up with reverse polarity although it never seen it. This would explain your current set up.
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