Ignition Switch problem
I guess you have a 72?
The wiring diagram you posted is "ok" but they often leave out some details and options and are poor at indexing the connectors
Go back to the same website and download the 72 factory service manual "which came from here" and it will have more complete diagrams
It is not unheard of.......regardless of wiring hacks.......for the "stuff" inside the ignition switch to waltz around inside and give "interesting" results
AbodyJoe did a great pictorial here on getting the wheel/ switch/ column apart
How To Install an Ignition Switch in 1970 Dodge Dart