instument cluster does not work

I have a 1999 grand marquis and yesterday the instument custer stopped working. The speedometer, trip meter, gas gauge, volt, temp are all inop. Also, the automatic lights dont work when it gets dark, you have to turn them on manually. :banghead: Im thinking that the harness might have came unplugged, i have checked all the fuses and they are all good. If anyone has any ideas, please help. Thanks