What was found
AT FL 370, THE RIGHT SIDE WINDOW OVERHEAT LIGHT ILLUMINATED. RAN QRH, TURNED SWITCH OFF FOR 3 MINUTES. TURNED SWITCH BACK AFTER APPROX 6 MINUTES OVERHEAT LIGHT CAME BACK ON. TURNED SWITCH OFF FOR THE REMAINDER OF THE FLIGHT. ACFT GROUNDED. PRESSURIZED AIRCRAFT IAW AMM 05-51-91-790-801, AND CYCLED UP AND DOWN FOR 45 MINUTES WHILE OPERATING WINDOW HEAT. NO DEFECTS NOTED. ALT DEACTIVATION USED IAW CHAPTER 5 TABLE 3, ITEM 1. ACCESSED P6-11 AND INSPECTED WIRING FOR ARCING/OVERHEATING DAMAGE NO DAMAGE NOTED IAW W/D 30-41-11. PERFORMED COIL CORD INSPECTION RIGHT NR 2 WINDOW IAW AMM 30-41-00-200-801 NO DEFECTS NOTED. CHECKED RIGHT NR 2 SENSOR AND HEAT ELEMENT WIRING FOR CONTINUITY/SHORT AND RESISTANCE. FOUND SENSOR WIRING WITHIN LIMITS. FOUND NR 2 RIGHT WINDOW HEAT ELEMENT READING 60 OHMS AND CURRENTLY INCORRECTLY TAPPED FOR AN H15 WINDOW READINGS TAKEN FROM D1042A E2-1 SHELF. MOVED WINDOW TAP TO TERMINAL LUG 1 TB5014 FOR H16 WINDOW IAW W/D 30-41-11. INSTALLED THE NR 2 WINDOW HEAT CONTROLLER. ALTERNATE DEACTIVATION REVERSED. OPS CHECKED GOOD IAW AMM 30-41-00-710-801. ETOPS SIGNIFICANT SYSTEM GROUND VERIFICATION SUCCESSFUL.