[BirdTRD]

Is the melted wire the one that goes to the Edlebrock pump? Is this a new install or has it been installed and working for a while?

Wires will melt if the current being drawn thru them exceeds their capacity, fuses usually prevent this but they have to be in between the problem load (pump or short somewhere) and the source (battery). This excess load is killing your battery.

I wouldn't drive this until you figure it out, there's a real danger of an electrical fire from the looks of that melted wire.