As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FWD EMERGENCY LIGHT SIGN AND EMERGENCY CEILING LIGHT INOPERATIVE. REMOVED ALL BATTERY ELECTRICAL CONNECTORS TO ISOLATE PROBLEM. NO SUCCESS. REMOVED AFT BATTERY IN THE WARDROBE. THAT FIXED THE PROBLEM. OPS CHECKED GOOD. INSTALLED THE ELECTRICAL CONNECTORS AND R & R THE BATTERY.