Joined: Aug 2010
Posts: 12,711
Likes: 2,100
From: Madison, WI
Bikes: 1961 Ideor, 1966 Perfekt 3 Speed AB Hub, 1994 Bridgestone MB-6, 2006 Airnimal Joey, 2009 Thorn Sherpa, 2013 Thorn Nomad MkII, 2015 VO Pass Hunter, 2017 Lynskey Backroad, 2017 Raleigh Gran Prix, 1980s Bianchi Mixte on a trainer. Others are now gone.
I used a short bit of angle Aluminum and a couple bolts. I cut the bracket so that the light is mounted lower than the rack deck so if I put something large on the rack the light would not be in the way.
The black plastic light holder is from the seatpost bracket that came with the light.