1991 Lesabre Limited
 

Have 1991 Lesabre. Runs ok. No power to climate control. Radio powers on, but display does not. Only control on radio that works is volume. Rear windows work, front are very sporadic. Sometimes they work, sometimes not. Speedometer, fuel gauge, and indicator lights work. Dash light does not. Interior entry lights work.

Any suggestions where the problem might be?