I am trying to find part numbers. I have a Hyundai Elantra 2005. I need to know the radio fuse number, roof light fuse number and clock fuse number. All of them went out.

Am not sure whether you have the Hyundai Owners Manual. If you don't I find it very worthwhile. Section 6, the "do it yourself section" lists page 6-34 and 6-35 for fuse descriptions. Also on the cover of the fuse box in the car under the ash tray left of the driver is a pictogram, but in any case according to my manual radio and clock are both listed on the "audio" and is in the inner panel, the 10A at the top right(next to the spare). Don't know about your roof light - hope you don't take offense but assume you checked the switch just didn't get set wrong, but if it isn't solved by fixing that one, the manual lists RoomLP controlling the inside lights, which is in the bottom (shorter) row on the far right. Of course, this might not help but if it does I could possibly scan my owner's manual page and email it if you can't find one.