Halogen headlights converted to Xenon Headlights

[Thorsen]

I don't know much about Headlights, but my first question is does every Porsche Cayenne from 2003 to 2006 have halogen headlights or does some of them have xenon?
I bought some new headlights for my Porsche Cayenne Turbo 2004 and found out that only the low beam would work because it was originally halogen headlights in the car. but I've seen you can buy a wiring harness for xenon lights that fit a 2004 Cayenne. will that make my new headlight work in the car? or is there more I have to do to get this thing working in my car?
I hope I don't need to buy new headlights again..... Because I can't return the new ones since I've had them for 3 months now

[JFP in PA]

Most factory installed Zenon headlights require a separate controller for the HID system.

[Thorsen]

so I would have to figure out a way to install the controller for the hid system and also change the wiring harness for both lights. Also heard some people say I might need new code in the car to get it to work.
found this on ebay : 

2003-2006 PORSCHE CAYENNE (955) XENON HID HEADLIGHT BALLAST CONTROL MODULE

WWW.EBAY.COM

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Model: PORSCHE CAYENNE. Search for more parts forPORSCHE CAYENNE. VERIFY PART # & LOOK OF PART: You can verify that the part number (and any hardware or software versions on the part if it is a computer module) and look to make sure the part shown in the...

i think that my old one had a controller at the bottom of headlight

Edited April 9 by Thorsen