Posted by Bkpigs on August 02, 2016 at 19:34:35 from (50.103.106.144):
I put a single wire alternator on my farmall 504. I connected the arm wire and the batt wire at the regulator and connected the arm wire to the output of the alternator. The charge is only 12.3 v and when I shut off the tractor the amp light comes on. The alternator is used that I got in a box when I bought a tractor so no telling on how good it is. The amp light is off when the tractor is running though. What could be wrong?
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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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