I am planning to put in oem xenon headlights over time as a project.
I have purchased a passenger side xenon headlight unit to begin with. How do I know if its bi-xenon. Are all the xenons bi-xenons. Is there a way to tell by just looking at the bulbs through the front. Also are all a4 b7 xenon got drl's. Again if not how can I tell if they mine has it or not by just looking at it.
Sorry if these questions sound silly.
Just want to make sure that I buy a matching drivers side.