Electrical connectors are ugly, and here is far from the cable coming from the white wooden piece.

I have not found boxes of the right size on the market, let’s design one with SOLIDWORKS XDesign and 3D Print it in white !

Here is the 3D model picture.​​​​​​​ a design to clip and avoid drilling holes on the wall.

Also here a part to hide the hole and pathway for the cables :