German B&M make a nice tidy 4 red LED set, each on a wire that lays in a rear vent hole in your helmet ,
with the coin battery compartment on the strap. ..
low fred setup.
But if it rains helmet covers dont have capacity to fit lights too..
so your head gets wet..
don't forget your Towel !
Last edited by fietsbob; 10-24-13 at 10:45 AM.