Vauxhall Astra Owner's Manual page 226

Low/High beam (1)
1. Rotate the cap (1) anticlockwise
and remove it.
2. Rotate the bulb holder
anticlockwise to disengage.
Withdraw the bulb holder from the
reflector.
3. Disengage the bulb holder from
the plug connector by pressing
the retaining lug.
4. Replace the bulb and connect
bulb holder with the plug
connector.
5. Insert the bulb holder, engaging
the two lugs into the reflector and
rotate clockwise to secure.
6. Fit the cap and rotate clockwise.
Vehicle care
Sidelight/Daytime running light (2)
1. Rotate bulb socket (2)
anticlockwise to disengage.
Withdraw the bulb socket from the
reflector.
225