That 12v conversion willl have meant some cobblin' on the wires, but nothing major. From stock magneto wiring, it would require only a two-pole switch on the hot to the coil to replace the single-pole grounding switch used to kill the mag. That and a bulb or diode inline between the switch and the alternator to keep the alternator from draining the battery. BobM has had a very helpful set of wiring diagrams posted for some time, showing each layout -- link is below. Follow the link, and compare diagrams 4 and 5. (5 is for an H/M, but the concept is the same - bulb or diode inline in the #1 wire from the alternator.)
I restored the '47 BN my grandfather and his dad bought together when new. Along time int he works, and a lbor of love, but the old girl started up on the third pull of the crank.
Nothin' quite like gettin' an old family tractor runnin' again. Have fun with it!
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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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