I feel like a homo
This problem has come up many times.. Easiest way is to break the old light, then take it out. Simply push the new unit in.
USE AT YOUR OWN RISK!!!!!!! If you want to remove just the light, then the service manual says to put tape on the spoiler at the top, and use a "special" wedge (looks like a body filler plastic applicator) and tap it in with your hand until the light pops out. The light itself is a non serviceable LED assembly. I dare say breaking it will be costly.If you want to remove the whole housing, you have to remove the spoiler which is glued on, good luck with that
i heard it was a spoiler off job too, although im sure people have got it out by breaking it, im sure you would struggle to get a new one in though, whats wrong with yours ?, does it have water in it ?