size front door speakers

Hi Harry, The speaker size for the 1994 Camry is 6X9. They do have a cover so removing the door panel is unnecessary. Once you have the speaker cover off there should be a screw towards the top that is holding the speaker in. You can remove the screw and it should pop right out. It can be tricky to remove the dome light because it doesn't come off easily and there is no easy way to do it. I recommend that you use a flat head screwdriver and go at it from different points, maybe use two flat heads at opposite sides so that you can pop it off without breaking it. Good luck!