Suggestions take truck for hook up repair battery connection

Just to confirm, there are two studs at the fuse box, you need the wire to be connected to the stud on the left as you stand at the front of the truck. The wire that is connected at the stud, IS the wire that runs back to the hitch. This is pretty simple....check for power at the stud....if you have power, trace that wire for a break or run a new one!