I posted a while back because i was having some h.i.d. problems and they would turn off then back on while im driving. I installed all new ballasts and bulbs and re ran all the wiring for them... The new ones worked fine for about two months and are now doing the same thing. Only now when they do it i can turn my brights on and they work just fine. That part makes no sense to me. I have no idea what the problem could be or where to start looking trying to find it. Here is a video of what they do.
YouTube - Messed up mustang headlights
YouTube - Messed up mustang headlights