My nav was in this state:

So it needed sorting. Here are some pics of the install and the finished product. I turned up there at 9am, left at 2.30pm.
The only things I've noticed so far are:
1. The res of the Apple Car Play icons is fuzzy. They are looking into it for me, but it looks a bit rubbish compared to a pin sharp Iphone screen!
2. I have the arial mounted on the windscreen. Fine in London but DAB is patchy on the open road in the countryside. I would go for the shark fin in the future.
3. The reversing camera points down quite a bit. Not much a far view behind the car. But it does what it needs to do!
The positives are the Nav is really good, very visual, loads of info. The Bluetooth phone is super clear and the stereo quality is very good. DAB is awesome!
I will document it more as I use it.





