What was found
CABIN EMERGENCY PATHWAY LIGHTS ILLUMINATED DURING TAKEOFF ROLL AND REMAINED ON UNTIL CRUISE, THEN EXTINGUISHED. FOUND BAD SPLICE AT GROUND WIRE AND CHAFING IN OVERHEAD CEILING BETWEEN LAVATORIES. REPLACED SPLICE AND REPAIRED WIRING. ALSO REPLACED FORWARD RIGHT EMERGENCY EXIT AND OVERHEAD INTERIOR BATTERY PACKS AND ALL BATTERIES TO OVERWING EXITS AND AFT ENTRY DOOR. OPERATIONAL CHECK NORMAL.