ohh the 2 in the roof?
they are bulbs mate , your will need 2 x BA9's ive just ordered a couple for myself lol they push in and twist like a normal bulb
http://www.ebay.co.uk/sch/i.html?_nkw=red+ba9+leds&_sacat=0&_dmpt=UK_CarsParts_Vehicles_CarParts_SM&_odkw=ba9+leds&_osacat=0&_trksid=p3286.c0.m270.l1313
or
http://www.ebay.co.uk/itm/2x-4-LED-RED-BA9S-T4W-Sidelight-Interior-Light-Bulbs-FORD-BENZ-AUDI-BMW-VW-/270970523704?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item3f171a1038
thats just the fitment you can buy them from anywhere, ive actually paid £4.50 for 2 with £1 postage from britelightleds