interior light and speaker

just been going over a few minor problems with the Evo 4, ive got the intercooler spray working(not sure why the coupler wasnt fitted to the switch)

found 2 other small problems, the front passenger speaker doesn't work...
is the speaker a 13CM one and does the whole door panel trim need removing to replace the speaker?
Fianlly the interior courtesy light has recently stopped working, im guessing the bulb has gone, how do i remove the light unit itself or prise out the lense from the plastic trim?
Im not one for ripping parts of a car to find ive broke them, so i'll ask first.

Thanks.

The light trim is easy just get a sharp tool and prise it out gently,, the whole door card needs do come off, no more than 4 screws hold it in place,, as far as i remember it is 16.5cm i replaced mine a couple of months back with a ncie set of infinitys

Thanks for your speedy reply.