Being that your parking lights are also dead, I would check the headlight switch. The instrument lights are usually fed off the parking light circuit (I don't have a manual with me now).
"Those who hammer their guns into plows, will plow for those who do not." -Thomas Jefferson
'98 ZJ Laredo 5.2 Selec-Trac (249 to 242 swap)
'05 KJ Limited 3.7 Selec-Trac
'94 ZJ Limited 5.2 Q-Trac- sold, after 17 years
'67 International Harvester Scout 800; 345ci V8,T18 4spd, Dana 20 TC
'06 Chrysler 300C SRT8 6.1L