Your alt has (1) male field terminal? With a 4" jumper wire with alligator clips connect the large alt "batt" stud terminal to this small field terminal on the alt for (3) seconds ONLY with the eng at a fast idle & see if it charges. This(field) terminal must recieve switched 12V when the key is on & if not trace this green wire back to the ign switch to find the "open". Holler back

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