Push turn signal indicator to the side, they are only clipped in. The socket can be released by turning.

The Cascada has two left side turn signals. You need the original frames for the new turn signal. These are also clipped.

The new turn signals are only approved with E-marking (Germany)

OPC- / VXR bezels replicas are available in various designs on the well-known online platforms.

OPC- / VXR bezels
GM part number 13250944 / 13250945

Dynamic LED side indicator with E-marking
Since the Cascada has two left-hand side turn signal indicators, the ones offered for the Adam, Astra, Corsa and Insignia do not fit easily into the right-hand frame. For this, the turn signal indicators and frame must be modified a little and then glued together.
However, this is not necessary with the OPC / VXR bezels.
If you use two left dynamic turn signals, one side turn signal runs in the wrong direction. This is not permitted.

Dynamic LED side indicator offered for Adam, Astra, Corsa, Insignia ...
here the original turn signal frames must be modified

Dynamic LED side indicator
suitable for Cascada, CAN bus resistor is not installed in the LED-sidmarker

Some links for my Cascada friends in US / UK