Do me a favor. Disconnect the battery and check the fusible link (what's left of it) for continuity to ground. Something doesn't sound right with this. That wire shouldn't have gotten hot.
Now, I attached a pic below showing the charging system. Identify which wire you found melted.
Next, the voltage regulator for this vehicle is an integral component in the power-train control module (PCM). When you put things together, where did you check if it was charging? Was it at the battery or at the alternator? What were the results?
Note: Be careful placing a heavy gauge wire in place of the fusible link. That can cause a fire if the circuit is overloaded.
Let me know.
Monday, June 22nd, 2020 AT 9:28 PM