I have recently bought an 8p A3, 2005 model and would like to get whiter or bluey white sidelight bulbs. I am not that bothered about LEDs and I have some bulbs I used and liked in my old Golf Mk4 but I am not sure they would work. I did try them at one stage but it threw an error I think because I tried to do it with te ignition on. The Bulbs are the ones you get in Halfords, theyv'e sold them for years now but I forget the name, Prism I think, they look like nornal sidelight bulbs but with a translucent plasticky whiteish cover and come in blue or white, mine are white but have a blue tinge when on. They are polarity sensitive so having read more info on here I am wondering if I could use them by just switching the sidelights on (no ignition), remove old bulbs, then I could fiddle about to get them working and correct polarity before switching on the ingnition. Do you think this would work or should I just buy more up to date ones that don't effect the canbus? Next step will be headlamps and main beam, any advice on them would be appreciated too.