Is it possible to upgrade regular headlamps into OEM Xenon headlights? I was told that the wiring harness is not the same for the Xenon. Is this true? Can the harness be replaced? Is there an option of getting Xenon besides the OEM?

Thanks for the info. :D

*bump*

I also would like to know this. What exactly is needed to upgrade the 2003 X5 to Xenon ? What will I need? Also if it does not have xenon from factory, does it already have projectors? Or does only the xenon come with projectors?

Thanks.