VEHICLE PARKED IN GARAGE AND STARTED ON FIRE. CRUISE CONTROL QUIT WORKING PRIOR TO FIRE. VEHICLE SEVERELY DESTROYED AND FUSES OBLITERATED. CRUISE CONTROL DEACTIVATION SWITCH COMPONENETS RECOVERED AND XRAYED. INTERNAL CONTACTS ARCED AND SPLATTERED. ALSO ARCING ON WIRING HARNESS ADJACENT TO VACUUM BOOSTER.