Opel INSIGNIA Owner's Manual page 242

240 Vehicle care
3. Carefully withdraw the light
assembly from the recesses and
remove.
4. Turn bulb holder anticlockwise
and remove. Replace bulb by
withdrawing:
Reverse light 1
Turn signal light 2
Tail light, brake light and rear fog
light are designed as LEDs. In
case of failure, have LEDs
replaced by a workshop.
5. Insert bulb holder into the tail light
assembly and turn clockwise. Fit
light assembly with the retaining
pins into the recesses of the
tailgate and tighten the plastic
securing nuts from the inside of
the tailgate. Close cover.
Additional tail lights in the tailgate
frame
1. Open tailgate.
2. Release cover in side trim panel
and remove.
3. Press out lamp housing from the
inside of the side trim panel.
4. Rotate plastic nut anticlockwise
and remove from the bulb holder.