Ok I got my truck back together got it to run once, took the batteries out during the *3 weather when I put them back in it wont start and I have a grounding issue somewhere. The only thing disconnected were the batteries and the glow plugs and various other snap on/off fittings. The grounds appears to be in the fuse box terminal side THAT WAS NEVER UNHOOKED???
I have checked the starter that isn't it?

HELP as I am drowning, just need a starting point don't mind working but am at a loss!