"Randolph" <trash@junkmail.com> wrote in message
news:402440A1.C8FA60AD@junkmail.com...
> Perhaps your voltage regulator is broken.

Maybe, but it may also be that there IS a ground problem, such that both H
and L filaments are on. This overheats the bulb and soon burns it out. With
one new bulb, test if high and low beam switches correctly.

Stewart DIBBS