CHEVROLET SILVERADO BRAKE LIGHT NOT WORKING

I Have A 1989 Silverado C/k 1500. Before I Press In The Parking Lights And Or Head Lights To The Left Of The Steering Wheel, All Is Fine....

Every Time I Touch The Brake Pedal It Blows The Fuse Instantly.

Never Had Any Problems With It Until Recently When The Rear Brake Lights Stopped Working While The Third Brake Light Is Fine. The Fuse In...

My Truck Has No Brake Lights. The Tail Lights, Flasher, And Reverse Lights All Work. Both Brake Light Bulbs Are Good, And The Fuse Is...