no power to the fuse box under the dash . i replaced the relay still no power. going to look at the fuses under the hood but dont know how to tell if there good or bad, any ideas ? and does anyone know witch fuse sends power to the box under the dash?

under the hood of your truck where the fuse panel is there should be to big big fuses box looking and if the metal tab in the fuse in sliced snaped or broken in any way known to man then it is bad same for every other fuse on the truck.