Headlight Problems

[Awann99]

The other day I was driving my 1969 gmc 1500. And the ammeter wire started melting the plastic around it. After a bit it stopped I parked the truck at a friends house and looked under and noticed that the header had melted the rubber away from the positive battery cable and was making contact with it. I decided to drive it home and the headlights started flickering ang then went out. I pulled over and now the lights only work on the passenger side, on the bright light setting. (They are still very dim) If I switch to regular all 4 lights don’t turn on. I suspected the voltage regulator got fried. Replaced it and nothing changed. I tried to start it and the battery was dead and the alinator isn’t charging the battery even though it’s a month old.
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