Just for reference. On my 74 Ramcharger, I rebuilt the entire connection using Metri-Pack terminals and everything is good. The downside to that is that the Metri-Pack housing is too big to slide thru the opening in the Steering column collar, so in order to remove it all the terminals have to be removed from the housing before pulling the switch out of the steering column.
The entire reason why I'm going down this rabbit hole is because on my wife's Duster 360, I've got an intermittent no-start and tracked it down to poor connectivity inside the ignition switch connectors.