Originally Posted by
GeorgePaul
What's wrong with having the tail light on the seatbag or seatpost? Sometimes I just clip a blinkie to a back pocket of my jersey -- that works too.
Because the saddlebag and/or rear cargo bag attached to your reaer rack block the the seatpost light. I think they should make then so they easily attach to back of the rear rack. I had to "jury rig" mine.