OK
It seems that this fuse is in the box called Central Junction box [by driver's side]
According to my 2004 Ford wiring manual the following fuses are on the same supply bus
32 15A,63 20A,30 10A,34 20A, 48 10A, 33 20A, 47 20A, 31 15A,36 7.5A, 35 7.5A, 37 25A
Fuse number is first followed by the amperage.
My gut feeling is there is a bad connection before the fuse.
If it was me, I would go to a junkyard [Ebay ?] and get this junction box so you can play around and figure out what the electrical/ mechanical details are
BUT if you do go poking around in that box be sure to disconnect the battery