@cboy, Terry, Interior fuse panel and under hood power distribution box locations and descriptions can be found starting on page 170 of the 2001 F250 manual link below. Good luck. I hope this helped you out, if so let me know by pressing the helpful button.
https://justgivemethedamnmanual.com/ford/2001-ford-f-250-owners-manual/
https://justgivemethedamnmanual.com/manuals/2001_ford_f-250.pdf