1992 Nissan Sentra XE Interior Electric problem

The engine is a 1.6L, manual with about 180,000 miles on it. I'm having trouble with the electricity in the car: the interior light won't come on with any setting (on, door, off), but. If it isn't placed on the door setting, the stereo turns off and won't come back on until the switch is placed back on 'door'. Any assistance you can provide would be greatly appreciated.