As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CABIN EMERG LIGHT: WITH THE MAIN BATTERIES CONNECTED, WHEN THE EMERGENCY LIGHT SWITCH IS MOVED FROM OFF TO ON POSITION, ALL LIGHTS WORK. WHEN SWITCH IS MOVED TO THE ARM POSITION, THE CABIN GOES DARK( NO LIGHTS). LEFT AND RIGHT BATTERY SWITCHES ARE IN OFF POSITION. /// SIGN OFF /// REMOVED AND REPLACED EMERGENCY BATTERIES, PERFORMED CHARGE AND OPS CHECK GOOD.