Vauxhall VECTRA Owner's Manual page 130

Securing in the vehicle
Place child safety seat on rear seat or front
passenger seat facing away from direction
of travel and push against backrest.
Pull la tc h pla te of vehicle safety belt out of
retractor and engage into relevant belt
buckle.
128
Lead lap belt of v ehicle safety belt through
both guid es beneath seat cushion of child
safety seat and pull tight.
Pull shoulder belt of v ehicle safety belt
behind back of c hild safety seat and lead
into backrest through outer slot facing
direction of trav el.
Then lead shoulder belt beneath the belt
buckle integrated into the inside of the
child safety seat and pull tig ht.