Has no elec.power to anything except headlights. Battery tests good on 1995 Mazda Protege

Ran fine but all of a sudden nothing worked except headlights. Starter doesn't click , interior lights don't come on, nothing seems to get power.

Asked by for the 1995 Mazda Protege
I think you have a problem with the ignition switch circuit powering the ign and accessories. Get it checked out by an auto electric shop or a Mazda expert.
If you want to find a specialist, here's a directory link for you: