back in july i had HID'S install in my 07 m35x.when i drive over bumpy roads the light on the road has this jumpy kinda flickering look to it.took it back to the shop that did the install and they said its fine.i know its not suppose to be that way.they check the ballast and wiring and it was ok..can a loose headlight cause this ?

 

well,not sure if his is the same for the m's but the 06 coupe projectors are held in place by 3 pivot bolts,if one of the pivot points is unsecured then the projector will be loose,could be ur problem as well,only way i know of checking is by actually opening the headlight and looking behind the shroud

 

park the car in my garage and was able to duplicate the problem by taping the top of the headlight.the little projector is moving.can i tighten these up and what tools are required.
thanks