Im in the process of doing this to my WJ. Covering the speaker grills with Grill cloth.
Only got acouple pics of the tweets, but first you take the panel off.
On the back side of the tweeter grills they melt the plastic tabs around it to secure it in place. I used a Dremel to sand down the pastic tabs flush with the grill. Once you do that it'll pop right out.
Easiest way to wrap them in cloth is to lay the cloth on top of the small grill pop it back into the dash piece and then I used some super glue and some accelerator to dry the glue to hold the cloth in place around the back side rim of it. Then used some "Gel" super glue and accelerator around the sides to secure the grill back on the dash piece.
Grills are held in the same way and taken off the same way. But they look alittle different on the doors.
Sanded down the tabs holding the grill on the door panel, I think there were 12 of them. Then pop the grill piece off.
The "infinity gold" symbol comes off easily by bending the three tabs and pulling it off.
I didnt get many pics of the grill cloth wrapping and securing it....but I used alittle spray glue and some super glue on the back side of it to hold it in place, its not going anywhere. I have three more doors to do so Ill try and get more pics.
Here's the plactic pieces that are left on the back of the speaker grill.
Once everything is wrapped in the cloth push the grill back on the door panel. Then your going to use some screws/washers to hold the grill back in place. The screws will go into each tab that was sanded off to remove the grill.
Front door before and after:
Sorry if my directions stink. Ill try to update and get more pics as I do the rest of the doors.