Duster fusible link wiring problem

This probably is an external shunted ammeter. The ammeter is not in the picture unless we need it for diagnostics. It does the exact same thing; shows the amount of current going to or from the battery - not including the starter.
@Dakota Smith Try to read this revised diagram. Its still a work in progress, but I *think* the damaged wires are shown correctly.
To start, just see if the colors and relative size of the fusible links seem to match up to the connected items. The gray fusible link is 18 AWG, the dark blue fusible link is 16 AWG and both go to a bulkhead connector.


The heavy black wire from the alternator is the output wire. It attaches on the alternator with a ring terminal onto stud. The alternator case will be marked Bat or Batt (because that's where the wire eventually connects to.)
In your pictures, it looks like the 14 gage red fusible link may be the one thats burned away. See if you can verify that.

Dakota Smith said

View attachment 1715237264 This wire isn’t repairable because it’s so close to that rubber piece. Where can I find a replacement fusible link like this one? The two coming out of the same side are only less than a foot long, but the single wire side is about 2 ft long. I can take more pictures if that would help.

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Does the other end of the single wire make a junction with a thin wire, and another heavy black wire?
If so that is the battery feed.