hi my head lights only got high beam and both lights use to be on now im missing my left *if siting on the bike* light it finaly burned out i think but was wondering if low beam used both lights of just one....or something

 

Both on for high and both on for low.

If you are going to change them you may want to replace them with a H4 Halogen bulbs. There is a quick trick to make them fit. It takes about 15 minutes total.

 

yea but at the exspence of possibly frying my wireing harrness? dont like the sound of it. hopefully my last bulb lasts a while

as id rather put a hid conversion to it.