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Farmall C & Super C Tractors, 1948-1954

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6volt negative or possative ground

Tue Jul 31, 2007 10:02 pm

I just got a super c and all the wires are gone, but can tell it is 6 volt. is it posative ground or negative? how can you tell.

Tue Jul 31, 2007 10:04 pm

6 volt would have been + ground originally.

Wed Aug 01, 2007 9:00 am

In reality, it doesn't matter which way you wire it up. The "electronics" on a stock Super C are not fussy about ground. All you need to do is polarize the generator once everything is connected, and start the tractor. If you can verify that the generator is charging properly, but the needle moves to the left, then swap the two wires on the ammeter.
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