Ok, so I lied and was too lazy to take pictures. At any rate, the Cyo Premium (non daytime running lights version) does indeed have a 3-position switch. 0 - S - 1 for off, senso and full on. Someone else mentioned that the Cyo Premium with running lights should also have a 3 position switch, but with 0 - S - T where T is the daytime running lights position. Peter mentioned that the Premium T had a 2-position switch, but he also mentioned that he was riding with a prototype. Could be that they changed the final version?

Either way, new question: I bought the Secula rear light for seatpost/stay mounting. 1) the mount kind of sucks. They give you a massive zip tie that is too big to really cinch down on a small seatstay. I don't think it would work any easier on a seatpost either. I wasn't at work where I could grab a "three hand tool" to try and tighten it down. I ended up having to cut it off, wrap the section of stay with a layer of electrical tape and then use a smaller zip tie. I'll probably just replace the mount with a bolt on style seatstay mount from a trashed reflector at work. Oh yeah, I had a question...

So I can't seem to determine whether or not the Secula tail light has a positive/negative terminal. One of the terminals seems to have been ever so slight dabbed with a bit of paint. I'm guessing maybe that's the ground? But I can't see any other markings at all. Is my light going to crap out if it gets reverse polarity? I made sure the connection at the headlight was done properly. My hub won't be in until sometime next week anyway, but I'd like to get it all buttoned down in the meantime.