Sounds like you've got it OK to me. It would be great to have the Geo/Suzuki wiring diagram to confirm that the sense terminal is not used. The Toyota diagram is good for explaining what the terminals do but I expect that it is for a different model alternator where the sense terminal is used. I see that it says that if you don't switch the power to the IGN terminal, you will run the battery down - just as you found out!
Thanks for the link to the pulley kit!
