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Hello, my name is***** does sound like the alternator has failed. At alternator with vehicle off verify the large red wire has battery voltage. With vehicle running verify small light blue/red wire has voltage, then backprobe dark green wire and ground it. Grounding dark green wire should cause alternator to charge, if not replace the alternator. You can buy an alternator off ebay and here are replacement instructions. Let me know if there s anything else I can do to help. THanks.