I have/had (it's intermitant) this same
problem with my SideKick, you didn't say
what you were driving, but it's the fuse
under the dash, it's a little loose fitting
and looses contact. I just bent the blades
on the fuse a little and stuffed it back in,
works for a long time then it will happen
again, so I clean and replace it, problem
solved
Wild