Well, yeah, if its corroded where it connects and now has a bad connection, but you didn't say its "intermittent". I mentioned "if you're getting no power anywhere in the truck", since you hinted that it was completely dead all the time, not intermittent.
If its intermittent, then you have a loose connection somewhere. Grab the fuesblock under the hood and jiggle it around while the key is in the on position, see if you hear it popping or crackling like a loose electrical connection. Also see if there's any sparks visible when you do this.