Opel ASTRA 2014 Owner's Manual page 242

240 Vehicle care
3. Disengage the bulb socket from
the plug connector by pressing
the retaining lug.
4. Remove and replace the bulb
socket with bulb.
5. Attach the plug connector.
6. Insert the bulb socket into the
reflector.
7. Swivel the spring clip forwards
and engage.
3-door hatchback
1. Rotate cap (1) anticlockwise and
remove it.
2. Rotate bulb socket anticlockwise
to disengage and withdraw from
the reflector.
3. Remove the bulb from the socket
by turning anticlockwise.
4. Replace and insert new bulb into
socket by turning clockwise.
5. Insert the bulb socket into the
reflector and turn clockwise.
6. Fit the cap and rotate clockwise.