Here's a pic of that setup on an H4 mag, your J4 should be similar. You need to disconnect the wire from the mag's coil to the points. The grounding wire needs to be disconnected from the mag too. You will need an ignition switch with battery voltage fed to the switch and from the switch to your auto type coil. Then from the coil to the points. Hal
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Today's Featured Article - A City Guy's First Tractor - by Fred Hambrecht. After living in apartments in Atlanta for more years than I care to remember, the wife and I decided to move to the country. Humming "Green Acres is the place for me..." we purchased a 29 acre tract about 60 miles south of Atlanta. Next came the house, I could talk about that ordeal for another two weeks... But, I want to talk about my tractor! We didn't even own a lawnmower, and all of a sudden we had enough grass to feed all the starving children of the bovine world. Naturally, I talked
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