How did I miss this!!

I'm very interested

The OEM head unit in the new car controls the satnav somehow so this may be the only option.

If I understand this right then if I just buy a board and cable then I can (somehow) get it made it up using stock parts in the future?

If that's right then put me down for one and I'll pay as soon as anyone asks - sounds like a great insurance plan for a non-empeg compatible car in 10 years time

If not then put me down anyway - I'm 90%+ sure I have a non-trivial empeg install coming up that this may be the answer to...