My right hand, oh oops, for motorcycle riding....my right hand
Sorry couldn't help myself.
My DDM Tuning 55w xenon bulb, otherwise I'd be dead by now. Sure lights up those deer/coyotes/neighbors' cats/badgers (no joke)/owls with 6' wing spans unable to fly over road with overweight prairie dog in claws (no joke). Best $50 upgrade to my '12 GSA!