Lets start with the switch itself:
Originally Posted by 33fastr
The running lights were fixed by replacing the ICC switch that had gone bad. (that was hard to figure out) but the generator remains a mystery.
Do you recall what "gone bad" means?
Have you ohmed the generator switch to see if it is still OK internally?
In the course of futzing around with unknown wires and jumpering and all that... were the switch internals fried?
If all that is good (I suspect it won't be)...
It will start at the generator...
Then move on to the starter solenoid (relay) that the switch is supposed to be operating and the wiring between the two.