I have a 2002 dodge 3500 quad cab dually 4x4 the interior lights and the radio quit heard a pop under dash no fuses are blowed

For some reason in the newer dodge rams the module that controls the interior lights is built into the instrument panel. Sounds like you will need to replace the instrument panel. Its b.s I know, I have the same problem, but my radio still works. Call the dealer and try and get some input over the phone from them. Otherwise it's $120 for them to check it out. Almost $1000 to get them to fix it.

Check all fuses.not just ones labeled radio or int lights thet might be fed from other fuses. check cig lighter fuse first