Flip the tab to switch the position.
The night position will help to reduce the glare from headlights behind you when driving after dark.
Keep the inside and outside mirrors clean and adjusted for best visibility.
Adjust the mirrors before you start driving.
Front Seats
Honda Civic Service Manual. Rear Door Sash Outer Trim Removal and Installation (4-door)
8291A7 LEFT
8301A7 RIGHT
Removal
1.
Rear Door Rear Sash Outer Trim
1.
Remove the door rear sash outer trim (A).
...