Help with no power??

Yes I agree
I believe that fix failed!

New harness was fine for the first 10 or so years, then it needed some repairs and I went to the saved harness.

I'm serious about the cause of the original failure may still be there. Start with checking for shorts to ground. That's the most catastrophic.

It sounds like what ever this 'wire around' is (many ways to do this) it may have failed. Result being no battery power to the main splice.