Ford Superduty battery and charging issue

This has just been a cluster-f&^%. The dealership counter guys wouldn't sell me a 115 amp alternator because there book showed only 110 amp in that year. After some discussion and a cross reference to a Motorcraft number they found the alternator but wanted $100 more than web price. Good bye Ford. I next went to Oreilly's and bought the Motorcraft replacement. They matched the web price. Bought a new pulley, too. Got it all home and ready to install but the three pin connector is different. Back to the store for a three pin connector with pigtail that mates with the new alternator. Unfortunately, I can't find the pinout of the original and this alternator has an additional single connector on the case.

Can anyone lead me through the wiring change so I can use this new connector with my original vehicle wiring? Somehow, I believe I've gone from a Ford 6G to a Ford 4G (at least some connector images show that to be the case).