I have a 2.5 TDI B6 cab, and after seeing the valeo HID kit decided to order one for my car. However when I took the headlight out the cab headlights don't have the cutout for the ballast! That'll teach me to check first next time...
Anyway, I have read that the B6 S4 uses the same headlight units even though it has factory Xenons (which is why I thought the kit would fit). So does anyone know what ballasts the S4 uses and where they mount it the headlights?
This is the kit I have that doesn't fit:
Retrofitting Valeo HID Xenons to H7 Headlight