What was found
EDP (ENGINE DRIVEN PUMP) HYD PWR. POS 2O1=L,O2=R) EDP HYD LOW PRESS LGT ILLUM. EICAS MSG DISPLAYED (LT,RT) HYD PRIM PUMP. EICAS MSG (LT,RT) HYD SYS MAINT (WAS, WAS NOT) DISPLAYED. CREW COMMENTS: PUMP AND SYS LO PSI LIGHT ON WITH R ELEC DEMAND SWITCH IN AUTO OR ON. FOUND WIRE SHORTING ON FRAME AT THE ELEC CONTROL PRESS SWITCH 532. AT THE CONNECTOR D75. SPLICED NEW WIRE REF STD WIRING PRACTICE MANUAL 20-30-12 AND SYS OPERATES NORMAL. LOCATION AT RT PYLON SAIL TAIL HYD COMPARTMENT.