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Is that a CS-130 alternator?


Yes

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In the wiring diagram, that assumes a 1 field application, correct? I upgraded to the 2 field with the solid state regulator, so what do I do with the other field wire?



Having an isolated or grounded field alternator is moot at this point, all that is required is a 12 volt switched feed to the "turn on" on the CS (wire with the resistor) I drew up that diagram for someone that had a isolated field system hence the reference to hooking it to the existing field "feed" wire, you can get that switched feed from anywhere you want. It is internally regulated so just tie back your added field return wire and toss the external regulator.

Rick