Introducing the Fender-Mounted Light Bracket, a nifty way to affix a rear light onto your fender! We've stocked the E3 light mounts from Frame Builder Supply for a number of years now. Last fall, Igor and I were talking about light mounts specifically to mount to the rear fender. A lot of us ride with generously sized saddle bags without quite enough room for a seatpost mounted light. Alternately, if you use a rear rack top bag, the bag will likely cover the light. We find that mounting the light elsewhere like a dropout or seatstay is too exposed, or will be covered up by panniers.
So we took a couple of the E3 mounts that we sell and looked at the rear of the Polyvalent, and what we wanted to see was the light attach to the fender, in a similar way to the reflector we sell, attaching directly to the fender. We mocked some brackets up using scrap paper, and came up with some ideas to send to Tony at FBS. We went back and forth about the measurements and such and voila - a new light mount. The great part is that you can use it for a blinky light or a dynamo light. There is still a slot in the middle of the bracket so the wire can pass through easily.
An added benefit to this setup is the ability to run multiple rear lights. Coming from a randonneuring background, I always had two battery powered lights. For night time riding, having two rear lights really helps. You always kept a spare on hand in case something happened. You could also set them up in different positions, which I found made me more obvious to drivers (I always ran them in solid mode - being in a group of riders with a blinking rear light was seen as impolite as the riders behind you would have their night vision ruined by the constant blinking and power of the light).
I think it looks really cool and certainly makes for a more classy/elegant mounting solution.
Cost is $15.50 ea and can be found on the site here. They're currently only available in Silver.