so the other day i noticed my lights flicker real quicly on and off. im driving a 07 g35 coupe 6mt i thought nothing of it but then it happend a few more times last nite on the way home both lights at the same time. i belive it was only when hittin a bump but its not constant... so before i take apart my headlights ne suggestions on what i shud check? like bulbs connectors fuze? ground? not shur where the ground is tho plz advise thank you