Headlight harness wiring diagram? - zpost Apr 17, 2018I am going to put aftermarket ballasts inside the headlights. I am also trying to bypass the oem wiring. Does anyone have the wiring diagram for the headlights ( for both pre and post facelift)? On halogen headlight, the harness connector has 6 pins, while there are 8 pins on xenon headlight. Z4 HEAD LIGHT WIRING DIAGRAM - Z4-forum z4-forum››E85 / E86 Z4 discussionDec 31, 2008re: z4 head light wiring diagram Post by BlackSapphireZ » Sun Dec 28, 2008 4:46 pm shipkiller! since you've mentioned it, can you get me the diagram for pre-facelift NON-XENON light diagram? entire headlight please if you got it.