The accessory power socket can be used when the ignition switch is in ACCESSORY or ON *1.
Open the cover to use it.
NOTICE
Do not insert an automotive type cigarette lighter element: The power socket can overheat.
The accessory power socket is designed to supply power for 12 volt DC accessories that are rated 180 watts (15 amps) or less.
To prevent battery drain, use the power socket only when the engine is running.
Honda Civic Service Manual. Cruise Control Combination Switch Removal, Installation, and Test
738125
Removal
There are SRS components located in this area. Review the SRS component
locations, and the precautions and procedures, in the SRS before doing repairs
or service.
1.
Battery Terminal (SRS) - Disconnection
...