What was found
AIRCRAFT WAS GROUNDED: PILOT DIVERTED ON ACCOUNT OF MULTIPLE FLIGHT INSTRUMENT FAULTS/ELECTRONIC DISPLAY ISSUES. EMERGENCY WAS DECLARED. DURING INSPECTION, FOUND #2 ENGINE FIREWALL DISCONNECT CONNECTOR PLUG AND RECEPTACLE D1216J/9 HAS EVIDENCE OF SEVERE ARCING ON PINS 'B' AND 'C'. MAINTENANCE REMOVED & REPLACED RH IDG FEEDER CABLES IAW SWPM 20-10-11, 20-10 -12, 20-10-13, AND AMM 24-11-01. IDG SYS OPS CHECK GOOD IAW AMM 24-11-00.