There is also coding with a vagcom (to tell the car what lighting it needs to use) and a sensor that needs to mount in the LH rear suspension that measures the cars position for the auto adjust to work. Beyond that I'm not sure...
Does not having auto-sensing, DRL or the leveling system make a difference with these headlights that are on the market? I've seen some descriptions that have DRL listed in them and some that don't.
JasonS4 - you seem to know quite a bit about the set up. How/when do the LED's turn on? Are they on simultaneously with the head lights? Or do they require a seperate switch to be installed inside the car? Since I dont' have DRL I'm not sure how the LED's would work.
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