Originally Posted by
Looigi
You could fabricate a strap that goes around your aero post and bolts to the L bracket.
I like this idea. It got me thinking. Might be able to wrap a thick-ish rubber strip or tube around the post and drill holes in the end and run the bolt through. Might need a square nut or something in the middle for the L-bracket to rest against but I think this might work. I'll experiment.
And if that fails just buy a new light. Thanks for the link. I've looked at a few like this. Probably something out there that would work properly.