steve this is an 06 C5 and the side light is a frosted stip all the way along the top of the head lamp, so you/i could not see the were the bulb come through by looking at the front,
i manged to do the N/S one with both rubber covers off of the dipped beam and side lamp,
i then had one hand in with fingers upwards through the dipped beam oppening, and towards the side lamp holder to pull it out, with two fingers at the side lamp oppening to grab the holder as it protruded,
i found i could not get my fingers into the side lamp oppening as well as each side of the holder, there just did not seem to be enough room as this oppening is only just big enough to get two fingers into,
the owner had previouysly had a freind attempt to fit the N/S dipped beam bulb, he ended up pulling the wire clip fully out, and as its is so deep into the back of the head lamp body he could not re/fit it,
so the owner then bought the car to me and half an hour later i got the wire and dipped bulb back into place,
the problem i found with this is you can see it with a morror, but with you hand in there you you then cant see what you are doing, so have to do it by feel,
Chris were abouts in the country
regards malcolm