Small electrical problem

Just bought a 91 S15 Jimmy 4x4. When truck is in park, key is off and doors are shut all 3 courtesy/ dome lights are on but are real dim. When I open the door the two top dome lights go out but the under dash light comes on bright. The same if I close the door and turn the dome light switch on. I unplugged the switch but still the same. I will dig deeper in a few days. Thought someone else might have same issues one time or another. I will reply with the fix when I get there. :banghead:

Sounds like you may have a door switch that's leaking current through...have you checked them?