Opel CORSA Owner's Manual page 206

204 Vehicle care
4. Press the retaining lugs and
remove the bulb carrier from the
light assembly.
5. Remove and replace the bulb by
pushing the bulb slightly into the
socket and rotating anticlockwise:
Tail light/Brake light (1)
Turn signal light (2)
6. Insert and turn bulb clockwise into
the tail light assembly. Fit light
assembly with the retaining pins
into the recesses of the vehicle
body and tighten the plastic
securing nuts from inside the load
compartment.
Close cover and engage.
Reversing light/rear fog light
Left-hand drive models
Reversing light is located on the right
light assembly in the tailgate, and the
rear fog light is located on the left light
assembly in the tailgate.
Right-hand drive models
Reversing light is located on the left
light assembly in the tailgate, and the
rear fog light is located on the right
light assembly in the tailgate.
The description of bulb replacement
is the same for both lights.
1. Remove screw from the tailgate.
2. Move light assembly slightly to the
outside, then withdraw from the
tailgate.
3. Remove the bulb holder by
turning.