Folks, my 5" Wipac spotties arrived in the post last Saturday :D

The instructions accompanying them and information on Mini2.com inclined me to have a go at installing them myself on my 2002 Cooper S. However when I went to look for the "yellow/blue wire going into OS headlight" (as per wiring diagram off Mini2.com)to splice into it, I just couldn't find it. Is it perhaps that this diagram refers to non-Xenon lights ?

Could someone please tell me which Xenon headlight wire to splice into for the Wipacs install ?

Thanks