72 k20 wiring help needed

[Ofnaman1]

I am repairing the wiring on my new to me 72 k20 and cannot find some of the info i need on two wires. I found the wiring diagrams on here, but they don't really answer my question. On the cab bulkhead, engine side, there is a black/white tracer wire and a black wire right next to the main power feed for the fuse block. My truck had those two wires cut and taped up near the voltage regulator. From what i see on the diagram, it appears they both should be fused and basically go to the battery positive lead. Anyone know what they actually power? Thank you.