Vauxhall Insignia Owner's Manual page 205

204 Vehicle care
2. Unscrew two plastic securing nuts
from the inside by hand.
3. Remove tail light assembly. Take
care that the cable duct remains in
position.
Detach wiring plug from bulb
holder.
4. Unscrew the screws and remove
bulb holder.
5. Push bulb into socket slightly,
rotate anti-clockwise, remove and
renew bulb.
Tail light/brake light (1)
Turn signal light (2)
Tail light (3)
Reverse light / Rear fog light, may
be only on one side (4)
6. Insert bulb holder into the tail light
assembly and screw into place.
Connect wiring plug. Install tail