hello just bought a set of xenon headlights for my car but when plugged in and turn on ignition the drls should come on but they don't just the sidelights are on but not the drls and no other lights work nothing at all had a look at the coding and it looks as if coding not needed as the code i need to change is all ready a 2 (bi xenons with drls) but my car is halogen just wondering if there is a few different adapter cables as if i plug them in to a audi a6 all lights come on as they should exept drls as this car didnt have them so i know the headlights and ballasts work ok just not in my b7 but do in a audi a6 any help before i wast money buying a new harness only to find its the same as what i have thanks