That is not a problem at all and you certainly are not confusing the issue. I was just recalling the -DM equivalent (non-A lead) wiring from memory. Thanks for posting the real stuff.

By the way, I suspect that the dial was replaced at some point with a speakerphone-compatible one and the spare switching leads were just insulated and stored. I'm sure that's why they didn't show up in your diagram.


Ed Vaughn, MBSWWYPBX