Remote trunk release for Golf IV 3-door

Hello everyone,

My friend's car is producing bubbles at the rear hatch opening. Our idea: When repairing the paint, we should also remove the handle and use a VW electric actuator to open it. (Where there's nothing, nothing can rust ). This electric actuator should be able to be opened with a remote control key, just like in my Golf IV Variant.
Does the control unit need to be reprogrammed for the 3-door model, or is it sufficient to compare the wiring diagrams for the variant and 3-door models and then add the wiring of the 3-door model according to the wiring diagram of the variant?

Regards,
Sure, here is the translation of the text from German to English:

"Micha"