As you can see from the attached photos, the portion of the under dash harness that is visible in the engine bay is in bad shape. Suggestions from those who have dealt with this problem please. Is it reasonable to find solid wire and splice new wire to replace what you see or replace the entire under dash harness? In any case, it’s apparent the engine bay wiring is going to need to be replaced after the previous owner hacked it up. Thanks for your advice!