[AcampoDave]

The metal connectors in a Packard 56 plug can be released by inserting a precision screwdriver into the socket and depressing a release tang on each side. The first pic has the screwdriver pointing at the tang on the female side of the metal connector. Just depress it and pull the wire out. The second pic has the screwdriver pointed at the release on the male side. Push that prong toward the other prong and pull out the wire.
Edit: to JoeJoe210...btw I see that was your first post. Welcome to the forum. Good to have you aboard.