Hi Trace,
I looked for that wire as well and never found anything.
My problem ended up being the pins going into the end with the yellow on it were so thin they were no longer making contact.
I was able to use the alternator end to still plug into the alternator but spliced in a new connector.
All has been good since.
If you need the connector on the alternator side, best bet might be to figure out which cars have that alternator and head to the junk yard and see if you can find the connector. Chaper than buying it new I am sure.