OEM Bi-Xenon Headlights Retrofit

Next step was to get away from halogen lights to xenon lights. After receiving some helpful tips from roofer, I started looking for a pair of complete OEM lights. Don’t like the conversion kits. After a lot of searching I got in my hands a pair of brand new OEM Bi-Xenon headlights from an M3.

PRICE: £75 for the right and £125 for the left!!

Installed them in less than 2 hours. I couldn’t be bothered to take the car to the dealer to flash the LCM unit to accept the xenon so I did a bit of moding to trick the on board computer not showing me the bulb-out error on the instrument cluster. 2 resistors (1 for each headlight) and 2 changeover relays did the trick. While lights were off, the bulb-check pulse would be routed through the relay and the resistor to the ground, therefore the system found a load (resistor) and errors disappeared. When lights went on, the relay would disconnect the resistor and route the current to the ballasts etc, therefore preventing overheating of the resistor.

Halogen crap (installed) VS Bi-Xenon

Old lights out! Car looks blind without headlights! I had clip type indicators whereas the bi-xenon headlights required screw type ones. Got around this problem by making a mold on the indicator with resin, then drilling it and basically making it screw type. (Later I bought some used screw type indicators)

Me installing with a friend! The bottom trim was a bitch to put back and I ended bending the part of the chassis where it clips.

Result:

Light output is.. incomparable with the standard halogens! I can see very far away!