Strange, I just came here to ask about the same thing.
'95 GL Wagon
Everything was fine until last night. Open door, lights (overhead, kneewell, cargo area) come on.
Enter car, close door, lights go off.
Key in ignition, rotate, lights come on as car starts. Lights stay on and will not go off. Drove several miles that way.
At destination, shut engine off, lights still on.
Open and close all doors including tailgate, lights remain on.
Pull Fuse #8, lights go off.
Reinsert Fuse #8, lights come back on.
Dashboard dimmer switch operates/dims dash and console courtesy lights as normal. Rotating in and out of detent which normally would turn interior lights on/off makes no difference.
I have Fuse #8 pulled for now, but that also kills the radio memory and clock.