You have done an excellent job of describing the connections that it has taken me the better part of 10 days to figure out through lots of questions and consultations with experts like yourself. I found that I had originally wired the relay so that the two battery terminals were attached to posts 85 and 86. This arrangement kept the coil constantly activated even with the ignition and the lights off. The result was a very dead but very new battery within a matter of days. Have now wired the relay as you indicated, and bike, lights and owner are doing very well, thank you.
Hopefully the forum managers will see this thread and keep it posted as a sticky because it sure was hard for me to interpret the wiring diagram for the relay, and I've had some experience with electronics. Your description makes it crystal clear and should save lots of folks from having to experience my recent aggravation.
BTW, the brake light modulator unit is produced by Back Off! and works like a charm. Really simple to install, too, as even I could do it and get it right...
