I haven't specifically had problems with the lights, but I've changed the blower motor switch. It was very easy to get to. Pop off the long defroster cover at the windshield, then take out the 2 screws at the top of the center trim, and I think 2 screws down lower on the center trim panel, and pop it off. From there you should see several screws that hold the A/C controls in place. You should be able to see from there how to get to the lights. If I remember correctly, the light bulbs are behind the knobs and shine through them somehow.
If guns kill people, then pencils misspell words, cars make people drive drunk, and spoons made Rosie O' Donnell fat!
'01 TJ Sahara, 3" BB front, 2.25" BB rear, 1.25 JKS BL, 1" MML, Skyjacker Hydro shocks,33/12.50x15 BFG TA/KO All Terrains homemade disco's, Hi-Lift, CB, GPS