different Voltage Regulator pin matching
 

My car has a wiring harness for the 911-603-206-13-M260 voltage regulator (bottom of picture), however, my alternator uses the top one in the picture (M262). So I'm trying to wire out from my harness pins to this new regulator. Can anyone tell me how pins A, B, C match with 1, 2, 3? I'm assuming A=1, and B, C = 2,3.
http://forums.pelicanparts.com/uploa...1347326805.jpg