Last night my projector headlights low beam went out on the passenger side. My question is how do you change the bulb?

look in the "emergency - projectors" thread. i just posted on the same issue there. if you need pictures, i can always send you some. my projectors use H3 bulbs and it is a very simple thing to do. you just have to unhook the clip that holds the bulb down and unplug the bulb and then do the reverse to install the new bulb.