US88 Ignition switch - Starter stays running

Since you've been chasing electrical gremlins I have to ask, have you downloaded a FSM & check the wiring per the diagram. I ask because I've seen no reference to that.

Yes, and it all makes sense. If I put direct power to the wires that require it, everything works as it should, the car starts and runs.

The wiring on the back of the replacement switch doesn't match the original.

The replacement switch doesn't interface smoothly with the key cylinder.

Is this a part there are no direct replacements for? Should I roll the dice on a used one? I have a local parts guy checking who is really good at figuring out crosses and tracking parts down. Hopefully he'll come up with something.