brake switch fuse keeps popping

I,VE GOT A 83 S-10 , I HAVE A PROBLEM OF BLOWING THE FUSE WHEN BRAKE PEDAL IS PRESSED?? I,VE EWPLACED THE STOP LITE SWITCH THAT,S ATTATCHED UNDER PEDAL, COULD I HAVE A SHORT OR SOME THING, I,VE PUT 30-AMP. I JUST CHANGED THE STOP LITE SWITCH AN KEEP POPING THE FUSE?? ALSO HAVE PROBLEM WITH THE TURN SIGNAL,S WIPER,S THERE ON THE SAME SWITCH ON STIERING COLUMN, ??? BRAKE LITE,S FIRST, THEN WE,LL WORK ON THE TURN SIG,S AN WIND SHELD WIPER,S??