Thanks, Gordon! That article says to flash the R terminal with 12V. This alternator only has two wires. One has 12V from the starter. The other terminal has a blue wire plugged into it. I unplug it and the dash light goes out. Oh, there is also a screw on the outside of the alternator body. I assume that's ground of some sort.
Which of these would be the equivalent of R? I assume R is 'regulated' or 'regulator'. Would that the blue wire? (formerly noted as terminal 61?)