As per my other thread I recently fitted a Brodit clip and the following is how I connected into the AMI, i figure the pictures may help someone.
I tried a number of cables and found this was the only which worked:
dockXtender: Dock Extender Cable for iPad, iPhone and iPod
There are a total of 6 screws which hold the glovebox in place, 2 at the bottom in the footwell, 3 in the inside lip of the glovebox and one at the end of the dash on the left. To get to the screw on the left pop off the end of end of the dashboard area you can see in the pic the holes where the clips are located:

There will be one screw which holds the top left of the glovebox.
There are a number of clips which hold it in place but I found it comes away pretty easily.

The easiest way I found to run the cable was through a hole in the top which only needed widened a little bit, if your fussy you could take the cable apart and reassemble the end once you pass it through

I cable tied the extension cable to the existing cabling to avoid rattling and ran it down through the bottom right vent into the footwell:

From here it was a simple case of running the cable under the trim and along a grove, I used some electrical tape to bulk the cable out and hold it in place:

I'm not entirely happy with having the cable exposed, there may be a way of routing it through the centre console and through the coin holder but for the moment it will suffice.
Hope the pictures help anyone thinking of something something similar.
I tried a number of cables and found this was the only which worked:
dockXtender: Dock Extender Cable for iPad, iPhone and iPod
There are a total of 6 screws which hold the glovebox in place, 2 at the bottom in the footwell, 3 in the inside lip of the glovebox and one at the end of the dash on the left. To get to the screw on the left pop off the end of end of the dashboard area you can see in the pic the holes where the clips are located:

There will be one screw which holds the top left of the glovebox.
There are a number of clips which hold it in place but I found it comes away pretty easily.

The easiest way I found to run the cable was through a hole in the top which only needed widened a little bit, if your fussy you could take the cable apart and reassemble the end once you pass it through

I cable tied the extension cable to the existing cabling to avoid rattling and ran it down through the bottom right vent into the footwell:

From here it was a simple case of running the cable under the trim and along a grove, I used some electrical tape to bulk the cable out and hold it in place:

I'm not entirely happy with having the cable exposed, there may be a way of routing it through the centre console and through the coin holder but for the moment it will suffice.
Hope the pictures help anyone thinking of something something similar.