I don't know how the isolator is wired but here are the wiring diagrams for the alternator and starter, I would go back to basics and make sure the connections are correct. Here is a guide that may help as well, and I have included the wiring diagrams for the starter and alternator systems, one of them is a little hard to read but it is all they are giving us.
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Monday, February 12th, 2024 AT 9:39 AM