In post #8, you were given a link to a diagnostic tool.
This was created by someone here and he has chimed in as well.
It is a very thorough and well thought out document.
If you can follow directions and know how to use (and have access to) a multimeter, you can do this. A Harbor Freight MM...
@jonheld can confirm, but if you broke the wiring on the coolant temp sensor, the engine needs that sensor signal to run the fuel pump. That would be why you're not getting a CEL with key on.
Don't bypass the fusible links if it has made no change. Put them back in. They are there to keep...