Hope I am not jinxing myself but if I EVER have trouble with "THAT WIRE", it's comin OUT of the firewall connector and through the firewall "RAT" by itself.
The one on my car doesn't look pretty - probably from when I had to charge off the alternator after getting a jump start.
My car doesn't need to be 100% original so I'll going to add a parallel wire this winter.
Of course I lots of plans for the winter - we'll see which ones get done. LOL.