Vauxhall Astra Owner's Manual page 59

58 Storage
Completely pull out the rear carrier
system until you hear it engage.
Ensure that it is not possible to push
in the rear carrier system without
pulling the release lever again
9 Warning
It is only permissible to fit objects
to the rear carrier system if the
system has been correctly
engaged. If the rear carrier system
will not engage correctly, do not fit
objects to the system and slide the
system back. Seek the assistance
of a workshop.
Install the tail lamps
First remove the rear (1), then the
front (2) tail lamp from the recesses.
Open out the lamp support on the
back of the tail lamp completely.
Push the clamping lever down and
push the lamp support into the
retainer until it engages.
Perform this procedure for both tail
lamps.