I have currently placed the control box in the glovebox while I test the software - I am simply strapping the laptop into the passenger seat at the moment.

Cable routing is simply to the left of the screen to the rear of the glovebox which has an opening to facilitate that.

I won't be leaving it there though. There is a mounting solution for such control boxes - the US/JDM market vehicles with GPS place the control unit below the passenger aircon vent. As the neccessary bracket is missing, there is space above the glovebox towards the rear. I am considering placing the control electronics there.

Routing the cabling and installation of the control box requires removal of scuff gaurd, side trims (either side of passenger footwell), decoration panel, and glovebox itself.

Once electronics are placed on top of the glovebox, I will need to put some kind of service caution sticker and documentation where it will be seen by the tech, as otherwise there might be a risk of cable damage - vehicle and or screen - if the glovebox was removed without consideration of the hardware attached above it.

It would require just a little more care removing the glovebox.

More pics later...