Posted by HVFDfirefighter on August 10, 2017 at 14:33:21 from (67.45.32.33):
1952 Farmall Super A: Ok, I took all old wires off and replaced them according to a three wire alternator. It is a 12 volt negative ground. Problem was I could not get the tractor to shut off. I wired in a light from the number 1 wire from alternator but it still would not shut off. So I rewired using the following diagram using only one wire from alternator. Now tractor runs and shuts off as it should. When running, the ammeter is showing a positive charge. My question is: can this setup boil my battery? I figure the alternator has a voltage regulator in it and uses the three wires. Since I am only using one wire, does it skip the regulator? If so, how does it know when to charge and when not to charge? I do not have any of the lights hooked up yet.
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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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