Farmall M wiring diagram

Farmall M, Super M, 400, 450 & 560 Tractors, 1939-1963
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Joined: Sat Apr 24, 2021 12:01 pm
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Farmall M wiring diagram

Postby TimBailey » Sat Apr 24, 2021 12:21 pm

1948 Farmall M 6 volt positive ground, Distributor, generator with cut out. Is there a wiring diagram showing original factory wiring ? I pulled all the old wiring that had been patched up over the years, installed new , copying the old lay out. Light switch smoke test fail. 4 position switch is original I think. Wired up, the wires to the light switch terminal became hot started smoking. I removed these connections , switch controls the generator charging like it should, watching the charge rates on a new installed amp meter. Lights work when power is applied to each one from the battery.
So not sure if I have something hooked up wrong to the switch, or if the light portion of the switch is bad :help:

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