Oem hid ballast wont stay on..

i just finished installing hid ballasts from a lexus gs400 and they turn on but after a minute or so they cut off my first guess was maybe the wiring but it all seems fine i even turned the car on and let it run in the hope that maybe there was just tomuch of a draw and now im stumped on what it could be. help please!!!

anyone? this is killing me!!

:bang: