keeps running

[mudmizer]

I moved the hot wire for the electric fan from one place on the fuse block to another. I don't recall which spade I plugged it into on the fuse block but now the truck won't turn off right away. Worked just fine before that. When I turn the ignition switch off the truck continues to run, not dieseling, it runs just as if I never turned the switch off. It runs for about 3-4 seconds and then shuts off nice and clean as if I then switched it off. I moved the fan wire because it kept blowing the fuse where it was after a few miles.
I guess I could wire the fan direct with it's own inline fuse.
Just wondering what may cause this.

Runs great, just I have to wait till it turns off to get out.