The dash is really loose and floppy in my truck, and even the whole light switch assembly just about pops out if i pull the fog light switch, so maybe they have messed with stuff in the dash before. No signs of new doors or new radios or other accessories though. I really can't figure it out. I wouldn't think the dome light would have a wiring issue??
I never considered the key in the ignition chime being the problem. You think blowing some high pressure air in the key hole might help, or bad idea?