PLEASE HELP! URGENT - 95 Montero NO INSIDE LIGHTS OR OUTSIDE
 

I just recently purchased a 95 Monetero - everything was working great then all of the sudden the internal lights (dash lights etc) and the external lights (parking lights, license plate lights, dome lights etc) no longer come on when the headlights are on.

The headlights work fine, as do the turn signals and flashers, but no other internal or external illumination. I've tried to find all the fuses and relays, and all looks good. Can someone please help me??