1996 Pontiac Firebird Rear lights

When the headlights are OFF: my brake, rear indicator, and rear hazard lights all appear to not work. Upon further inspection they seem to come on faintly. Only noticable with you hands cupped over the lights and looking through your hands to block out all exterior light. The front hazards work fine with the headlights off but the indicators merely stay on when a direction is selected on both the dash and the lights themselves. Also the light for the clock on the radio, which normally always remains on, gos out when the brake pedal is pressed and comes back on when released. When the headlights are switched to on the clock light problem dissapears however the rear lights all still fail to function. When the hazards are turned on with the headlights on the front hazards stay on all the time but flash noticably brighter periodically and much slower than normal. Also with the Hazards on, with the headlights on, the MIDDLE break light flashes when the break is pressed but all other lights remain inoperable The radio lights flash with the hazard lights on the dashboard when the headlights are on. Also when you try to switch the headlights to off with the break pedal pressed the headlights themselves go off (pop up headlights) but the motors do not go down until you let off the brakes. Needless to say I am absolutly flabergasted as to the array of problems that happend similtaniously for apparently no reason. Extremly mint low mileage car that was parked in a parking garage as I visited a museum and the car had not gotten wet at all prior to the incident. My car is also a convertible.