[Nitrous Al]

I decided to "work" with the original wires and I made it worse. I cut out the "melted" connector and matched the colored wires to each other using bullet connectors. (GRN to GRN, BRN to BRN, BLK-PNK to BLK-PNK, etc.) There were two (thick) BLK wires connected together. Should these two wires go together? I'm asking because now my headlights and tail lights work. When they are on when you signal, the passenger side signal lights up both the tail light and reverse light. I think the two BLK wires are screwing me up. Anyone know what's wrong?