The control head is probably shot. Happened on momma's 91 Caddy three
times. The digital display would blink, fade out or just not light.
On her car it was a used rebuilt that was put on with a 1 year warranty.
Lasted 11 months then replaced under warranty. It was $277 in 2001 for a
rebuilt control head..
Don't you just love electronics?
05 Park Avenue, 32,272
91 Bonneville LE 304,498