When running a 6 volt coil at 12 volts, Ive seen em get so hot you cant keep your hand on them, they will eventually fail. The ignition points are designed to switch not much over 4 or 5 amps but 12 volts on a 6 volt coil could raise that to say 8 amps so they will burn up pretty fast...You can use EITHER a full true 12 volt coil (around 2.5 to 3.5 ohms primary) or a 6 volt coil plus an external series voltage dropping (12 to 6) ballast resistor, your choice but Id opt for the 12 volt coil n be done with it. Youre right, at Pos ground its + goes to distributor...
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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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