Thanks OldMachinist helped me out with the diagram. I have a shop manual for a G series most things are the same just not the wiring. My problem was the corroded switch and terminals.
Thanks you were correct. Glow plug switch was same way. Still like to have a wiring diagram. Some one has done some rigging to the ignition switch. Spliced all the wires on it. They had it getting its power from what I think is a two wire accessory plug. That isn't correct is it?