Somehow my NR TrailRat wasn't working. Thankfully, my Blackburn System X3 was worked like a champ. Still, one light on the handlebar isn't as effective as two or three.
I'm open for recommendations on a helmet lamp that doesn't require a cord dangling down to my backpack... for local night rides when not going out too long & so don't like to carry a backpack/hydration pack. More specifically looking for something bright that can simply clamp to helmet... right now my Blackburn system does come with helmet mount but because the strap goes around & inside helmet, the helmet no longer fits as well.