Interior Light Problem

[Blookah]

I have a 1994 LT1 Coupe. Last night the interior door and courtesy lights came on and decided to stay on all the time, even with the engine off. I had to pull the fuses to keep from draining my battery but now I have no interior lights. Any suggestions on where to look and for what!?
BG

 

[hotshotzny]

had the same thing happen to my 82, i ended up pulling out all the bulbs and lived with it being dark until i read a post on here... ended up being a bad ground at the battery..once i fixed it my electrical problems went away..almost seemed to damn simple