Stoplight Switch
WARNING: This page is about a different car, the 1996 Mazda Protege and 1995 Mazda Protege. However, it is still accessible from the selected car via links, so may be relevant.
Disconnect stoplight switch connector. Using ohmmeter, check continuity between stoplight switch terminals. See Fig 1 . With brake pedal depressed, continuity should only exist between terminals "A" and "B". With brake pedal released, continuity should only exist between terminals "C" and "D". If continuity is not as specified, replace stoplight switch.