I want to thank everyone for their input. Believe it or not, it took all this time to take care of the speedometer cable problem. RockAuto has always had the parts I needed but this time, though the part picture was right, the part was not. Not once but twice. My local Autozone only had a "universal" cable, but it didn't have the right type of end to fit into the transmission. In the end leave it to Amazon to have the right part. Same image that was found on RockAuto, same part number, but the RIGHT part.
Mid you all I do is strip out the cable core and fish it through the existing sheath. Works well when you got the right part to start with. So, make note that RockAuto does not carry the right part for our speedometers. Regardless of the image and part number ATP Y-861. Amazon has the same part number but actually has the right part.
I've pretty much lost daylight as of this writing, but I have made note of all of the info and will endeavor to start figuring out the source of the fault. I'll check back hopefully with good news, if not with more questions.
Edited by madmanperez, 10 January 2019 - 05:36 PM.