are broken. when i turn them on, all other lights shut off. are they the only thing besides the horn that run off the battery? if this is the case, i may just need to have my battery charged. one would assume that the headlight and brake light are powered by the magneto, but im not so sure. also, when i brake, the headlight dims and the brake light goes almost completely out... instead of getting brighter to alert of my stop. makes night riding scary...