Originally Posted by
Zero_Enigma
Hmm.. this setup will interfere with a seat bag.

I have a topeak seatbag that has these elastic straps on the bottom. So i slip the light in the first strap, which holds it firmly. Then I loop the cord around the second strap, for safety in case the light were to bounce loose. Then finally I just tuck the AA pack into the seat bag itself. Works great.
-D