Opel ASTRA K 2015 Owner's Manual page 240

238 Vehicle care
9. Attach the cable to the retainer.
10. Attach the light assembly to the
vehicle body and tighten the
securing nuts from the inside of
the load compartment. Attach
cover.
Depending on the version, tail lights
and brake lights are designed as
LEDs. In case of failure, have LEDs
replaced by a workshop.
Light assembly in the tailgate
1. Release the cover in the tailgate
and remove it.
2. Unscrew the plastic securing nut
by hand.
3. Carefully withdraw the light
assembly from the recesses and
remove.
4. Press the three retaining lugs and
remove the bulb carrier from the
light assembly.
5. Remove and replace the bulb: