As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT CRUISE, THE DOME LIGHT AND PEANUT LIGHTS CAME ON BY THEMSELVES NO SWITCHES WERE THROWN, NO ABNORMAL INDICATIONS OF F/E PANEL WHEN WENT TO DC TIE WITH THE FREQ SELECTOR, THE LIGHTS WENT OUT. REMOVED AND REPLACED EMERGENCY LIGHT BATTERY PACK IAW MM 33-50-01-2. OPS CHECK GOOD.