Thank you for all the advice. I will go over the cables carefully.
Is there a way to check if it is the ignition switch? Can I just hook a second battery up to the first with jumper cables to see if a second battery would fix the problem? There are no wires at the second battery box, and it would give me an answer faster then running new lines. If I do that, should I run the black to the frame or to the first battery?
B.O.B.: Red 1998 Chevy 3500 Van 6.5L TD, High Top 327K Miles. Still discovering what was done to it.
(B.O.B. :Named after Bob the tomato and Big Ol Bus)