The lamp is exactly the same as sidelights and number plate recess.... 501. As for removing them, it a 2 second job. Slide them left or right (depending on which side of the car you are on...can't remember which just have to try) and then pull out. It doesn't move much...just to push a tab in so its un clipped from the wing. It will all become clear when you have you new in your hand too. Easy peasy.