hi I need help changing my halogen to bi xenon. I have them in and they don’t seem to code. My module number is 8k0 907 063, but I have seen people putting like 8k0 907 063 a and 8k0 907 063 d but mine don’t seem to have a letter after it would this effect? I have no clue, drls are not working and headlights flicker because they are not coding through vcds, anyone upto date with what I can do ? Any info would help me a lot thanks
