Both of the Side light bulbs on our 04 cayenne s are out, and am wondering what exactly these lights do? They are labeled "I" in the 2004 owners manual under the bi-xenon lights. and it is just below and to the outside of the main xenon lamp bulb. What turns them on and what type of bulb is it? It looks simple to replace just want to get the correct bulb.

Picture in below link, as the manage attachements is not letting me post this picture: http://www.renntech.org/forums/index...howtopic=12076

Thanks.