Vauxhall ASTRA Owner's Manual page 293

288 Self-help
Estate, van
1. Disengage cover by pressing retaining
lugs and remove.
2. Detach plug connector from bulb holder.
3. Hold the outside of the bulb housing,
unscrew the three fastening nuts and
remove the bulb housing rearwards.
4. Unscrew the three screws with a
screwdriver (vehicle tools – page 256)
and remove the bulb holder.