I own a 1991 Buick park avenue ultra. I'm sure it's in the same place as the buick. I just had that done. It is located on top of the steering column. You must take the front panel off in order to reach it. I would suggest that you go to an electrical shop. It is a dunting job.
Check the 1993 Park Avenue fuses first. Check the light dimmer switch to make sure that it is functioning. If these are ok, look for a bad wiring connection.
You turned off the dash light brightness control switch or blew a fuse. If you have power at the dash illumination fuse, the dimmer switch may be faulty.
It was the dimmer switch..
How do you uninstall a starter for a 1997 Buick Park Avenue
Check the dimmer switch
does not have one
89 Buick park ave install a heater coil
The schematic should be on the fan shroud.
Check out Crutchfield.com
Only a professional can do this...there are strict laws about the use of refrigerant
On top of the lower portion on the steering column.
Look at the rheostat or dimmer - usually the same as the dome light switch. Turn it from one exxtreme to the other while you have the parking lights on and see if the dash ligths come on. Check for a lose wire.