Very common issue. I have a 01 and if you turn the OD off then back on it will pop the fuse everytime. I really need to put a little tape around the wire.You need to pull the ignition and then the colum covers will come off. There is a great write-up over on TTT.Thedieselstop.com
that would have been my first question. sounded like it was a fuse problem to start with. put fuse in, blows, put second fuse in, blows.... = problem with wireing
I know you said you checked all the fuses and sometimes it's hard to tell if it's poped or not so I use a 12v test light to check fuses, it's faster and tells if you got pwr or not on both sides.
I had the same problem with my truck and I got news from a friend that worked for ford before the recall was issued and I ended up replacing the CPS and the problem was fixed. I haven't had any fuse problems as of yet.....Knock on wood!!! Love the truck though!