HID headlights keep going out

The "brights" are achieved by moving a shutter to expose more of the beam. I would suspect something is wrong with the mechanism that moves the shutter, the power supply to the mechanism, the wiring, or the connectors.

As for bulbs and ballasts, another member posted in another thread in the same vein that answers those questions here.

 

All you have to do is buy the a l l a h I think it is h i d to LED conversion but you want to get the high beam thing sorted out first that should work without provocation when you pull the high beam lever in the HID car there's no second element that comes on there's a shutter that lifts off of the HID bulb and gives you full blast light when you let go of that high beam lever the shutter which is silver drops back down over the bulb and put you into low beam mode so you need to check the fuses for your headlights there are right and left hand fuses I do believe and make sure they're good because you should be able to see the shutters going up and down while you look in the headlights while somebody pulls the lever and you might hear them they have nothing to do with the ballast and the light that's another story so if you get your shutters working then you can put the LEDs in and wire the LEDs to 12 volt power right from the car instead of the ballast so then the 12 volt car power will now power the LEDs not the ballast or any of that It's called the bypass connection your bypassing the ballast this should work for the rest of the time you have the car easily and I mean easily and boy are they bright they make the HIDs look kind of like toy lights.