As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EXTERIOR EMERGENCY LIGHT INOP AT RH AFT OVERWING EXIT DOOR RELAMPED, NO HELP. FOUND NO VOLTAGE TO LIGHT ASSY. CHECKED RESISTANCE FROM CONNECTOR 12004 PIN 12 TO CONNECTOR 12018 PIN 1 REF WDM 33-51-14. CHECKS OK. REMOVED AND REPLACED BATTERY POWER SUPPLY AT 27DEF (M1671) IAW AMM 33-51-06. OPS CHECK NORMAL.