box
Although this may be a method to check fuses it is not the best way
You do not need to pull all the fuses to test them most can be tested while installed in the fuse
and you really need to leave the battery connected
Using a VOLT meter with the fuse in the circuit will prove the fuse is good and will also prove that you have the proper voltage for the circuit.
See the attached link
http://www.expeditionforum.com/threads/fuse-testing-101.24587/
What I was getting at was to re-insert every fuse, since that was point in time when the truck stopped working. I'm thinking a fuse may not be inserted correctly, preventing the engine from starting.