If any electrical devices are not working, turn the ignition switch to LOCK 0*1 and check to see if any applicable fuse is blown.
Honda Civic Owners Manual. Accessory Power Socket
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 D ...