I may be getting a little technical here but will mention anyway. I see posts complaining about, or bragging up one-wire alternators. They are NOT all the same.
The old cast-iron generators, and the newer aluminum alternators with one-wire work the same way. They both rely on residual magnetism that is usually present. When it comes to alternators - some have more residual magnetism then others. So some cut in faster then others. If the alternator has no magnetism at all, the one-wire setup will not work.
The three-wire setup uses an outside power source to create an electro-magnet inside the alternator to get it charging. No residual magnetism needed.
I pay around $8 for an internal regulator for the SI series - "one wire" or "three wire." NO price difference.
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Today's Featured Article - Third Brush Generators - by Chris Pratt. While I love straightening sheet metal, cleaning, and painting old tractors, I use every excuse to avoid working on the on the electrics. I find the whole process sheer mystery. I have picked up and attempted to read every auto and farm electrics book with no improvement in the situation. They all seem to start with a chapter entitled "Theory of Electricity". After a few paragraphs I usually close the book and go back to banging out dents. A good friend and I were recently discussing our tractor electrical systems when he stated "I figure it all comes back to applying Ohms Law". At this point
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