Actually there are no spring on these ones. Only the bumper ones have the spring feature. When I changed mine I unscrewed 4 screws of the wheel well (if you unscrew more that's better for your hand later). I don't know the name of the screw driver you'll need but it is a small (not robinson, hex, phillips (sp?)).
There is a clamp (plastic unfortunately so be carefull) on each side of the side marker. Press tightly together and push it out.
(Hint) If you are just replacing a bulb there is no need to push them out just pull out the bulb and replace.
I changed mine from orig. to smoked you can see it on my webpage.
I reallllly have no idea how to get the side market lights out. I've got the idea down for the ones near the front, but the oval ones on the panels, i really have no idea how to remove. I'm looking to get smoked lenes for there.
ps. what sized bulbs are in these spots
--- the front turn signals(corners)
--- the side turn signals(small oval shaped)