Checked the dimmer switch. It's set to high.
All the door switches work. If a door is opened the courtesy lights under the dash and the dome light come on.
I have an alarm that was installed by the dealer way back when. Nothing has changed in the dash. Same factory premium sound unit. I think I am up to date on all of the recalls too.
All of the switches (lock and window)in all of the doors work but don't illuminate. Fuse 31 is definitely 7.5 amp. Wiper/washer and rear license plate lamps work.
My Haynes manual shows different color codes for the wires than actual colors.
It seems that all interior illumination that occurs when the headlights are turned on is not working. I feel like I am driving in stealth mode but I can't find that switch on the dash. lol
If needed I can try to take some pics this weekend of the fuse panel and post them. If I get time I will also check the resistance of the dimmer switch.