Bill........would it surprize you to learn that the starter motor will turn yer engine over WITHOUT the ignition switch ON???
Would it surprize you to learn you can start the engine without a starter motor??? as long as the ignition switch is ON??? It's called and armstrong starter (hand crank) You can also "tow-start".
Howsomevers; that does not address yer melted wiring harness. When you installed yer 12V-battery positive ground, you shorted-out yer internal 12V-alternator solid state diodes and let the smoke out thru the wires and melted the insulation. Alternators DEMAND negative ground. Take yer alternator into enny autoparts store for a "free" checkout. Simple, eh?
Unfortunately neither the Ford manuals ...nor... the I&T FO-4 manual show or describe a 12V-conversion. There are plenty of home-grown wiring diagrams for 12V-conversions. I like the 3-wire conversion that uses an "idiot-lite".
You definately need to change yer roundcan ignition coil to a real 12V-coil that uses NO resistors ever. Recommend the NAPA IC-14SB. ($15, cheap) ........Dell, a 12V advocate for the right reason
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Today's Featured Article - Tuning-Up Your Tractor: Plugs & Compression Testing - by Curtis Von Fange. The engine seems to run rough. In the exhaust you can hear an occasion 'poofing' sound like somethings not firing on all cylinders. Under loaded conditions the tractor seems to lack power and it belches black smoke out of the exhaust. For some reason it just doesn't want to start up without cranking and cranking the starter. All these conditions can be signals that your unit is in need of a tune up. Ok, so what is involved in a tune up? You say, swap plugs and file the points....now tha
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