Help With Low Beams

[flyt89]

Im trying to install philips ultinon D2R bulbs in my 2002 ES300 low beams. I got the stock bulbs out, but now i cant get the clip to snap back on. I dont know how it goes and i cant see behind the light. Would it be easier to just remove the head light it self? or just use my hands behind it. and if it is easier to remove the headlight how do you get to the 4th bolt in the fender well area? Thanks