The instrument panel lights stopped working on your 1994 jeep wrangler when all other lights work what do you check?

1) operator error. check dimmer switch setting.

2) all bulbs faulty, check and replace as needed

3) bad (burned or corroded) headlight switch. expect taillights to be out, your question indicated this is not so

4) loose connection at electrical connector to helight switch. Try moving tilt column and wiggling connector