I'll jump-in first to suggest the obvious alternative - a Ford 3G alternator. The GM 1-wire alternators are less efficient, require pascers to adapt, do not have as much power at lower revs or idle (even the "200A" versions), do not charge unless initially revved to kick it into charging, do not have voltage sensing at the power distribution point, and do not provide function for either a charge warning light or ammeter. Oh, and they cost a lot more for all that. Use a mid-90s Thunderbird or Mustang V6 or 5.0L alternator to get all that back and for far less cash to boot.
BTW - your two wires are for voltage sensing (YEL) and charge indicator light or ammeter (RED/GRN). With a 1-wire you would cut them. With a 3G, you just hook them to the same color wires on the alternator. Done. Everything works.
:tup:
David
PS: I don't mean to sound adamant about it, but there is simply no reason to run the GM 1-wire alternators. There was before the Ford 3G came along 20 years ago, and now the GM 1-wire alternators have no benefits and several negatives. It's time to kill the urban legend about them. BTW - the 3G can be run as a 1-wire as well - but why when it's soooo simple?