Ground wire? Do you mean the negitive battery cable? I replaced them all 3 cables 2 years ago (falling apart in your hand describes them perfectly)
I dont really think this is (mainly) a glow plug issue, because after fueling up the glow plug light didnt come on... nor did it need to (because I was driving around for half an hour, and it was warmed up)

Apparently my dad used to add a quart of ATF to the diesul every few fillups to keep the injectors clear (which had rebuilt ones put on 10 years ago)
My uncle seams to think it's the injectors, and would adding a quart of ATF hurt anything other then my gas milage? What kind of ATF should I add?

If I were to pull a glow plug, would I need to replace the crush gasket, or is that fine to do once... also what do I retourque the glow plugs to?
~Nate

*EDIT*What ground wire do you mean? Heres a picture http://img.photobucket.com/albums/v644/NathanEbert/benzplugs.jpg
The wire circuled in yellow is curroaded, Should I replace it with this? Glow plug connecting wire ?
Is this what you are calling a ground?

If so, how does it reattach?
Yellow is the "glow plug connecting wire", white is the relay, and the pale yellow (i think, r/g color blind here) is the other connecting wire (does this waist a ton of electrictiy? should I replace them all with "glow plug connecting wires?) *EDIT*

Thanks a ton
~Nate