What was found
DURING CABIN WALK THROUGH FOUND EMERGENCY AISLE LIGHTS IN FIRST CLASS INOP. REPLACED POWER SUPLY "BATTERY CHARGER" FOR FIRST CLASS SEAT PROXIMITY LIGHTS IAW AMM: 33-51-06. NO HELP. FURTHER TROUBLESHOTING FOUND "Y" HARNESS OF ROWS 3,4 & 5AB DAMAGED. HARNESS NEEDED HAVE BEEN UPDATED AS PER CMM: 25-22-51 ITEM 90. CONTINUED TROUBLESHOOTING OF EMERGENCY AISLE PATH LIGHTING WIRE HARNESSES AT SEAT ROWS 3, 4 AND 5 AB. WIRE HARNESES ARE INTEGRAL TO INBOARD SEAT END BAYS. UNABLE TO REPLACE HARNESSESS WITHOUT DISASSEMBLING END BAY OF SEATS. AWAITING ENGINEERING FOR ECRA FOR WIRE SPLICE REPAIR ECRA- ENGINEERING +4. WIRE HARNESSESS IN LINE OFFICE. REMOVED AND REPLACED EMERGENCY LIGHT SEAT HARNESSES AT SEAT 3,4 AND 5AB IAW WITH CMM-25-22-51 AND AMM-44-20-25 PERFORMED EMEGENCY LIGHT OPS CHECK IAW AMM-33-51-00-710-801 ALL LIGHTS OPS CHECK GOOD.