WARNING: use care when prying off the speaker grill. Now that I am writing this I am wondering if the grilll needs to be removed??

Remove about 3 pieces of trim on the door opening. Pull enough carpet forward to get to the screws. Full Instructions are on this site and in the docs.

Kind of obvious once you start.

I am thinking as I type. If you follow the instructions you can probably do a better job than I did.

Don't they say "read the instructions twice and do the job once" or something like that.