Exit Lighting won't turn off interior lights - Buick Century

Usually, the interior lights ( e.g. over rear doors ) will turn off after a while...but now they stay on as well as the two lights on the rear view mirror.

Please help..

If the instrument panel dimmer is not locked in the dome override position, there may be a ground in either the interior lamp wiring or lamp socket. It is also possible that one of the exterior door handle switches is not opening, keeping the interior lights on.

What model year is the vehicle? There are some year-specific differences in the wiring.