I found all of it on e-bay. They are fairly old nowadays. So, it was nice to find a brand new harness. I would just keep hunting on e-bay. The numbers are changed sometimes. You can cross reference the numbers on AC Delco's website.
I just wanted to say "thank you very much for this post"! I followed your steps word for word. The fan worked flawlessly so far. I live in Texas and it is brutal heat right now. My family thanks you too!