Suzuki TL1000R & TL1000S Forum
If you haven't seen D'Ecosse's thread about regulators etc, its pretty good:
http://www.tlzone.net/forums/frequent-tl-mods/111499-definitive-charging-system-diagnostic-upgrade-thread.html
I learned a lot...I'd thought all regulators were like this more modern one for a long time now, but I was...