Ford 3930 starter wiring

ford1956tractor · Jul 10, 2016

Does anyone have an easy to follow wiring diagram?

rseeger · Jul 10, 2016

I have 4 3930 tractors and I will see what I have for wiring diagrams tomorrow at my shop.

RodinNS · Jul 10, 2016

In general terms you have a wire that runs from the key down through the transmission safety switch, then on to a safety switch on the PTO lever.... and this then controls a starter relay in the fuse box. The relay, IIRC, takes power from a bus in the box and through the relay provides switched current to the starter terminal.
I find the usual suspects in that system are the PTO micro switch, the transmission neutral and then the relay...
IIRC, they are both white wires with red tracers. The control circuit is mabey 18 ga and the other oen probably 12 ga.

Rod

Ford 3930 starter wiring

ford1956tractor

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rseeger

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RodinNS

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