Honda CIVIC COUPE 2018 Owner's Manual page 530

uuReplacing Light BulbsuHeadlight Bulbs
■
Low Beam Headlights
Models with halogen headlights
Bulb
Tab Coupler
528
1. Push the tab to remove the coupler.
2. Rotate the old bulb counter-clockwise to
remove.
3. Insert a new bulb into the headlight
assembly and turn it clockwise.
4. Insert the coupler into the connector of the
bulb.