I am hoping to work on the car tomorrow, at least for a little while.
I am going to take the glove box out again (and leave it out) so I can have easier access to the ECU for testing.

Mopar man, can you explain more about your theory of the ignition switch being worn out? With the replacement of the switch, what exactly would be worn?
The key goes in the cylinder and all that does is allow it to move the switch into the various positions, right?
Or am I missing something?