Installing a luxos U. I've got a pair of others on other bikes, but those were installed by an OEM in Europe. The process is straightforward: Crimp some spade connectors on, then connect hub to light input tabs. But here's a curiosity. What's that hole for right there above the positive connector? (This is the bottom / rear of the light, so that faces down.)
The factory installed lights on the other bikes have a wire coming out of there, about 2cm long, terminated with heat shrink wrap. The hole gets no mention in the manual, and I can't imagine (though I didn't take it apart to look) that there's an interior connector to the positive side, nor why there would be.
Anyone know what that hole would be for? It's not the lowest point on the light, so it's probably not a drain, though maybe it could be a drain for that portion of the shell, and my OEM added the little bit of wire to serve as a drip path that takes water away from the actual connection?