JUST BOUGHT MY SECOND BMW... NOW I HAVE A X AND A Z BOTH ARE VERY COOL BUT THE MAINTEANACE ON THESE BABIES STRESSES ME OUT. MY X 5 HEADLIGHTS ARE DISCOLERED, AND THEY WONT BUFF ITS ON THE INSIDE. I HAVE HID'S OR PRETTY SURE I DO THE STICKER ON THE LIGHT SAYS 25,000 VOLTS SO IM GUESSING IF NOT MY 12 VOLT BATTERY IS ON STEROIDS. IM LOOKING AT REPLACING THE LIGHTS WITH SOME DEPO HALO LIGHTS, WITH AUTO LEVELING. IS THIS A PRETTY SIMPLE JOB OR DOES IT HAVE TO GO TO DEALER TO BE DONE. PLEASE ADVISE. THANKS