Fuse problem? Wierd electrical

I've checked all the fuses in the engine compartment and under the dash. It started last week, when I turned on the headlights, the dash lights and tail lights
wouldn't come on for 3-5 second, after wiggling the light switch.
Now the dash lights, tail lights, and running lights don't come on at all, Also, when turning the lights on, normally the radio lights
would dim. They don't dim anymore. Is it a bad light switch (on the
steering column) or ground problem? Or do I have an electrical problem from hell? My
headlights and brake lights ARE still working. Thanks for your help.

I forgot to mention, it's a 98 Sebring LXI.