Re: Generator/Alternator Issues
Complementing John's suggestions, most likely, you have a one-wire alternator.
A PO (previous owner) wired the alt BATT stud directly to the positive battery post, shorter route, than going back over to the horn relay buss bar, then through the red wire to the battery junction block to the pos cable pigtail/fusible link.
The OE ammeter has two leads, one black and the other black/white and a lead is connected to the horn relay buss bar and the other lead connected to the battery junction block. The ammeter indicates the current flow and shows it a s a discharge, alt off, or charge, alt on/running.
With the alt hooked as mentioned, the ammeter will not indicate a charge, but would show a discharge. You would need to wire the red wire from the alt BATT back to the horn relay buss bar for the ammeter to indicate a charge - only if an OE ammeter is being used.
Also, most one wire alts need to be revved to start to work. You might give it a try.
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