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WC Ground

When new they where + ground but f it has been switched to 12 volt it is very likely to be - ground
 
It's still 6V. It had an 8V battery hooked up with positive ground and "ran when parked" where it sat for 15 years before I got it. I read a few threads online where you can tell by looking at the coil, but you can't read anything on my coil for all the rust. One wire is on the bottom of the coil while the other is on the top, and I'm not sure which one is the positive terminal and which is the negative.
 
Well if still l6 volts then it should be + ground it was that way when it was made and should still be that way. As for the coil well some are marked some are not and some will have a + and - some will have dis on one of the posts and nothing on the other post and there are probably others that have other things as for markings
 
Originally POS ground but no tellin what farmer Billy Bob or Bubba may have done over the years lol

If converted to 12 volts and a generator was still used, impossible to say what farmer Joe did as it can work at EITHER Pos or Neg Ground once properly polarized.

If converted to an Alternator it was likely changed to NEG Ground.

If it got changed the coil polarity and ammeter wiring should have been changed.

John T
 
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