Vauxhall Astra Owner's Manual page 174

5. Remove and renew the bulb.
Reverse light/brake light (1)
Turn signal light (2)
Reverse light (3)
Fog light, may be only on one side
(4)
6. Engage bulb holder in bulb
housing and screw in place. Insert
the bulb housing into the body and
tighten the fastening nuts by
hand.
Attach the plug connector.
Close and engage the cover.
TwinTop
1. Unscrew retaining nuts.
Vehicle care
2. Remove bulb housing from
outside. Disengage plug by
pressing on flap and remove from
bulb holder.
3. Detach seal from bulb holder.
4. Disengage sockets by turning and
remove. Press locking tabs on the
long sides of the bulb holder
outwards; lift bulb holder at front
end and remove.
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