Melted ground wire

Plus, that car looks to have some serious rust issues. So, is all of the electrical in the same shape?
pos/neg cable new, engine harness new, next will be front lights, then dash, rear light. Honestly aside from the engine harness that was butchered dash harness is the best I’ve seen of the 5 old mopars ive owned. i always replace all the wiring on these car just to keep my sanity, just a big nut to drop all at once.