Mice have eaten the wires on my Barn Find Hurst down to the connectors in some places & can't be repaired. Need a new engine harness & AC if that is separate. So I can try & start this car up for the first time & get it running. I've looked at some catalogs & they only had Chevy V8 & Buick V6 harnesses. Thanks

 

Try to search for a company called wiringharness.com Just as I have written it, no space.

 

I have tried all of the suppliers, no one makes a new harness. Mondellos says they have one for $175. Our local u pull it yard has an 86 5.0 Buick Regal that is likely the same one, though I do not know for sure because I haven't looked at this one very closely, not sure if it has TPS. Thanks

 

James, you're going to need the same skills whether you replace the engine wiring harness or repair the damaged wires and connectors. If you aren't confident in your skills I suggest you get a buddy to help that's familiar with splicing and soldering. Of course, you could always replace the entire harness with a Painless kit, but that's no easy task:

https://www.painlessperformance.com/...SAAEgJjxfD_BwE

 

Maybe get a service manual with a wiring diagram and do a side by side for comparison for the Regal. Might be close? Otherwise $175 isn't too bad considering your time involved. I did mine from scratch for a 79 trans am but buying new was only $220 and would have saved many trips to the parts store.
if you end up starting from scratch, I can't recommend Texas Industrial enough at the link below. They have every GM connector.
http://texasindustrialelectric.com/
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Did you try American Auto Wire out of NJ, they do a great job