I don't believe a winch, working a light load, will draw nearly as much amperage as a starter when cranking a healthy engine. Of course, we don't know how hard Mj's winch was having to work. I think the likely answer as to why the winch would work but not the starter lies in what we have already said - starter going bad, bad connections, faulty solenoid, etc. It only makes sense because the winch has to be on a different circuit.
I had a crazy situation once with a John Deere 4 wheeler (Bombardier) where the electric shift wouldn't up shift. Despite reading 12 volts at the shift motor. Turns out is was a corroded connection inside the wiring harness. It had enough connection to deliver 12 volts, but was corroded enough it couldn't deliver amps to do the work.
I had a crazy situation once with a John Deere 4 wheeler (Bombardier) where the electric shift wouldn't up shift. Despite reading 12 volts at the shift motor. Turns out is was a corroded connection inside the wiring harness. It had enough connection to deliver 12 volts, but was corroded enough it couldn't deliver amps to do the work.
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