Re: 12v conversion for super a

Posted by Ferd in Indiana on February 17, 2007 at 14:06:57 from (216.68.45.27):

In Reply to: 12v conversion for super a posted by GWINN on February 16, 2007 at 16:00:56:

To further complicate the issue, I converted a Super A to 12V years ago, with the true 1 wire GM alternator. The tractor had a mag instead of a battery ignition, so the ballast resistor didn't come into play. The only problem I had was the small discharge/battery drain as was mentioned in this thread previously. I'm no electrician, and a friend of mine suggested using one of the oil pressure ports to install a 2 wire oil pressure switch--- bought over the counter from NAPA. I put this switch in the 1-wire circuit so that when the engine started, the system was energized and she charged fine. When there was no oil pressure, the switch opened and I had no battery draw. Probably using a sledgehammer to kill an ant, but it's still working 20 years later.

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