No Interior courtesy or map lights!! what happened?

[Sin City Hoe]

As you can see in my other post I got my new headliner re installed today and after getting everything in place and re mounted not one of the dome lights work, nor do the map lights in the overhead console, or the lighjts in the doors. Nothing. I am assuming some how the relay burned out because it is every light??? The fuse is good in the engine compartment and the dash lights work and all have power. Any help would be wonderful. Which relay controls these. It wasnt marked under the dash. Other suggestions!!!! (by the way the headliner looks incredible!! http://www.fullsizechevy.com/forums/general-discussion/interior-tech/295213-99-2dr-2wd-interior-project.html:dunno:

[ssw/t]

not sure what year your truck is, but with my obs (92) when my dome lights and such went out its a fuse in the cab...20 amp if i remember correctly - the radio went out in mine too when it blew