Panel lamps out - fuse OK

Also, unless it changed in later years, it's the orange wire that goes to the cluster connector that feeds the instrument lights. You could probe that wire to see if there's power when the headlights are on.

Your right 70Duster, I checked a few of my clusters and on the "board" itself its is the orange #4 pin starting from the top notch or backwards on the connector. It should give him something to start with. Thanks