My right low beam headlight is out(the main light). It is very expensive to replace this light at the dealer. I took it to Car X because they do headlights and the guy said I can order the part myself to avoid the mark up if they order it and they will put it in and only charge labor. My question is, what light to order? My book says an H7 55 watt. How do I tell if it is a xenon light or a regular light-my manual doesn't tell me how I know? Is there an issue with Car X doing it? Please help me.