GROUND PROBLEM OR WHAT??

[SEARAY787]

i HAVE JUST BOUGHT A 97 SENTRA AND HAVE A PROBLEM. WHEN YOU TURN ON THE LIGHTS, THE BRAKE LIGHTS AND ALL COME ON. THEY DO GET BRIGHTER WHEN PUSHING THE BRAKE PEDAL BUT ARE STILL FAR BRIGHTER THAN SHOULD BE AND EVEN THIRD BRAKE LIGHT IS ON. CRUISE CONTROL WORKS IF LIGHTS ARENT ON BUT DOESNT IF LIGHT SWITCH IS ON THEN CRUISE LIGHT JUST BLINKS? IF YOU GET IN THE VEHICLE AND STEP ON BRAKE PEDDLE DASH LIGHTS COME ON DIMLY AS WELL. ALSO IF YOU GET IN AND STEP ON BRAKE PEDDLE THE BEEP GOES OFF LIKE THE KEY IS IN THE IGNITION. I HAVE LOOKED ALL UNDER HOOD AND DASH AND IN STEARING CONSOLE AND WHEEL FOR ANY OBVIOUS BURNT OR PINCHED WIRES TO NO AVAIL. WHAT NEXT YOU FAR SMARTER THAN ME NISSAN FOLKS?? IF THE LIGHTS ARENT TURNED ON ALL APPEARS TO WORK OK EXCEPT FOR DASH LIGHTS ACTIVATING WITH BRAKE PEDAL PUSH???????