Im basically with the Mayor on this, heres my take on it. The picture looks like the kit has a garden variety external series voltage dropping (12 to 6) Ignition Ballast Resistor, if so it should measure around 1.25 to under 2 or so ohms, does it?????
So to your questions:
"It comes with a resistor, so do I use this with my stock 6v coil?"
YES you sure can
"Or do I just switch to a 12v coil without using the resistor like he says?"
You can (toss the old coil and buy a new coil rated for use at 12 volts nominal, no ballast required), if you wanna spend a bit more money
BUTTTTTTTT Id use the ballast and the old coil as it 1) Saves money 2) Gives you the option (with proper switch and wiring) to by pass the ballast during start up for a better starting spark
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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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