electrical problems, flickering lights, instrument panel, radio and climate control

Hi All,

I am having electrical issues on my 2006 crown vic.
First the instrument panel started flickering.
Then the radio and climate control.
Now the car wont even start. Just make a clicking noise.
While the radio is on i can tap the brakes and the radio flickers on and off
Now i have NO brake lights, headlights, instrument lights and climate control lights.
Only the radio works.
Power seats still work
Power windows still work

Most likely this is a bad battery. You can have it charged and tested for free at Autozone and O'Reilly.