I currently have halo 2xcite headlights fitted and they replaced th original xennons headlights. I seem to have developed a fault in them. So I have a few options one to buy another set of Halo headlights or buy a set of Halogens off ebay. My question is would a set of Halogens work on the wiring loom and with the fact I did have Xennons originaly fitted. The z4 is a 2006 new shape 3.0 si.