Yes....... You have to drill a 1/2 inch hole in the plastic cap.... Takes about 5 sec. I am not aware of any other hid kit that you don't have to modify something...
Here is a picture of my Z4... as you can see a small 1/2 inch circular hole is cut in the plastic cap... when you pull through the wires in the Alpine kit... they have a really nice seal that pops into place.....
2013 BMW 750Li M Sport
2013 Audi TTRS
2013 BMW M5 (Sold)
2011 BMW X5 5.0 M Sport
2011 BMW 335I Convertible (Sold)
2011 BMW 750Li M Sport (Sold)
2012 BMW Z4 35is (Sold)
Last edited by FalconFlyer; 02-05-2012 at 09:33 AM.