No wiring diagram

[Waterloo]

If the fuse is pulled, and the relay is still working, I would think you are pulling the wrong fuse or the relay is getting power from more than one source, which could also be an issue. If I read you correctly, this was a hack wiring job bypassing the factory wiring. I would return the wiring back to factory, even if you have to run new wire using the schematics. God only knows who did what, I have always found it easier to remove the hack wiring and replace, as you will go crazy trying to figure out what the last guy did.