i have 2 problems.. i have a 96 cadillac seville sls... when i open my doors my interior lights are suppose to turn on but the dont ive checked all the fuses under the hood and in the trunk and they are all fine? i have no idea what the problem is... second i am trying to find out how to deassemble my instrament panel not the dash but the instramnet panel and cannot find any directions online.. please someone help

Optional Information:
1996 Cadillac seville northstar v8