What was found
TPA - FLT 2704 - ON CLIMB-OUT, NR 2 ENGINE FUEL HEAT VALVE OPEN LIGHT ILLUMINATED, NR 2 ENG OIL TEMP IN YELLOW BAND. CREW SHUT DOWN NR 2 ENG, DECLARED EMERG, RETURNED TO TPA. FLIGHT LANDED WITHOUT INCIDENT. TOTAL SINCE ENG TIME, 12 MINUTES. MAINT FOUND NR 2 ENG FUEL HEAT VALVE DISCONNECTED AND WIRED OPEN BY MISTAKE WHEN FOLLOWING SPECIAL PROCEDURES FOR MEL 30-3B. REINSTATED FUEL HEAT VALVE. OPS CHK GOOD. RE-COMPLIED WITH SPECIAL PRODEDURES FOR MEL 30-3B ON NR 2 ENG ANTI-ICE VALVE BY REMOVING CANNON PLUG AND WIRING VALVE TO PEN POSITION, ACFT OK FOR SERVICE. MAINT CLEARED MEL WITH REPLACMENT OF NR 2 ENGINE ANTI-ICE VALVE CONNECTOR. OPS CHECK GOOD. (X)