D1S is the 8000K replacement for the factory HID and you only need to replace the bulb. the ballast is compatable with out replacement, so there is no modification to necessary.
In regards to the fog/DRL bulb, if there is no switch already in the car, running an aux. switch is the only way to turn them on when the headlights are on. It was a PIAN to run that switch... just a heads up!
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Originally Posted by khislop007
Sweet!!! what bulb does the RS use for the headlights? can the bulb just be replaced or do you have to change the ballast as well to run the 8000K?
What HID bulbs did you use in the DRL's of the RS? I was thinking of putting a set of bright LED's in mine but I think I'll but the HID's and put them on a independent switch.  |