1998 Mazda 626 dash lights and marker lights

My dash lights and marker lights do not come on with the light switch. But they do come on when I press on the brake pedal. I have checked all of the fuses inside the car and in the engine compartment. All the bulbs are good and and like I sadid they work wnen you depress the brake. The dimmer switch even funtion when you are pressing on the brake. This problem just happened all of a sudden. It is not intermittent and there is no flashing when the light switch is turned on and off or jiggled. Does anyone have any Ideas?