HELP...!!! w/ my '82 Chevy diesel

[EngineCo.1]

I've got a 6.2 diesel that I bought back in 2010. I drove it for a little bit til the batteries quit on me one day. Figured I'd just replace them when I could. Well, finally got around to replace them with brand new ones from Advanced Auto. Turned the key, held the glowplug switch for 10-15 sec. and nothing. It turned over the first crank and nothing after that. What could it be? Another thing; I did notice the cable from the battery to the, I suspect is the starter gets super hot. Is this normal or is this the possible problem? Thanks in advance!!!