What was found
CREW REPORTED DURING CRUISE FLT, HYDRAULIC PRESSURE INDICATED 2,000 PSI AND ON RED LINE. WHEN PRESSURE RELIEF SWITCH MOVED, HYDRAULIC PRESSURE INDICATED 100 PSI. DUE TO A LONGER RUNWAY LENGTH AIRCRAFT DIVERTED TO KLGB AND AN EMERGENCY DECLARED. A MANUAL GEAR EXTENSION PERFORMED AND AN UNEVENTFUL NO FLAPS LANDING MADE. EMERGENCY BRAKES WERE USED TO STOP ACFT. MX DISCOVERED SEVERAL AREAS OF NICKED WIRING FOR HYDRAULIC PRESSURE INDICATION. AREAS OF NICKED WIRE REPLACED. A CONNECTOR FOUND TO BE DEFECTIVE AND REPLACED. AIR REMOVED FROM EMERGENCY BRAKING SYS, AND SEVERAL LANDING GEAR EXTENSION AND RETRACTION CYCLES WERE COMPLETED. ALL OPERATIONAL CHECKS WERE NORMAL. THE AIRCRAFT RETURNED TO SERVICE.