I looked through your other threads....just by all the problems you've mentioned.....I really want to lay my cards on it being the ignition switch.....it seems like you were able to baby it along by wiggling the key...disconnecting the battery and other tricks...but it seems that it was slowly dyeing like in the case with a bad starter.....you can beat on it for awhile and jump of at the terminals to get it to go for a wee bit longer....but soon it will die....

If you remove the instrument cluster, you will see the switch right behind the ignition....you can unplug it and see if the pins are free of corrosion....you can also buy electrical cleaner and spray into he switch.....its possible cleaning it may revive it....or at least verify my guess....if it magically works again, then we know...

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