"When I spoke with the people in parts, I was told when the conversion was done (if it was done properly), the starter should have been rewound for a 12 volt system, and the ground polarity reversed, from a negative ground to a positive ground."
The parts people are wrong. If your 340 came with 6 volts (IH was changing to 12 volts in 1958), it was positive ground. A 6 volt starter works fine with 12 volts, no rewiring is necessary. I assume you have an alternator, if so it HAS to be negative ground. If it has a 12 volt generator, most are negative ground, but it will work with positive ground also-the generator must be polarized no matter what the ground is. You do not polarize an alternator. If your ammeter shows discharge with the engine running AND charge with the lights or ignition on and the engine off, reverse the wires on the ammeter.
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Today's Featured Article - The 8N and the Fox - by Zane Sherman. Dec. 13 1998, Renfroe, Alabama. Last niht I dreamed about the day that I plowed the field of about 10 acres over on what Jimmy and Dandy called the Ledbetter field. I was driving the 1948 8N Ford tractor that Jimmy bought in 48 new This was prebably in about 1951 and maybe even befor the house was built. This would have made me to be about16 years old and I drove the tractor for nothing and would have paid to drive it if I had had any money which I didn't, but neit
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