Opel CORSA Owner's Manual page 202

200 Vehicle care
2. Press the clip to disengage bulb
holder. Withdraw the bulb holder
from the reflector.
3. Detach the bulb from the bulb
holder and replace the bulb.
4. Insert the bulb holder with the clip
downwards and engage into the
reflector until it clicks.
5. Install cap.
High beam
1. Rotate the cap (3) anticlockwise
and remove it.
2. Press the clip to disengage bulb
holder. Withdraw the bulb holder
from the reflector.
3. Detach the bulb from the bulb
holder and replace the bulb.
4. Insert the bulb holder with the clip
downwards and engage into the
reflector until it clicks.
5. Install cap.