I got all the way to the dust cover, but do not know how to unclip the fog blub...Need a little help.

sqeeze them together so the ends get closer, it will come right off then

Is it necessary to take off the wheels? Do we need to use two hands? I got a pair of PIAA ion yellow, can't wait to put them on.

damn i shudn't have bought nokya hyper yellow if i knew PIAA ion yellow existed.
got a link?

Squeeze the clips together. I doubt you'll be able to get two hands in there, unless you take the wheels off. I was too lazy and just turned the wheels and pried the lining open. Its pretty hard to do it the first time, but after that, it's not too bad.

is the clip locate at the lower part of the blub or what?

I got them in Japantown, cost $89+TAX

the clips should be visible when you twist the power supply thing off, just pull together and its loose