Hang in there, wiring can be frustrating. I have known many people who gave up trying to fix previous wiring and ended up just pulling the whole harness and starting over.
I have a bad carb on an MGB right now. I give up - thinking of taking it to an expert.
I plan on making Saturday a major service day, a lot of small parts have shown up.
One thing I plan on doing is cracking the fuel line up top and give a healthy shot of fresh non-corn gas and see if it will prime and run.
If that fuel pump is dead, I am sorely tempted to convert to electrical. I had enough misery getting that replacement to bolt up. Typical knockoff aftermarket tolerances.