I've bought the Parrot MKI9200 with the PC000043AA too.
I've connected the ISO cable to my CD30 radio/CD player and the radio/CD player is working fine. I connected all the cables to the ISO adaptor and the blue box, however when I plug the small screen into the blue box the screen won't turn on. I turn the engine on and it still don't work.
I tried seeing if when I connect the iPhone connector to my phone it would charge it up which it won't. I've tried swapping the orange and the red cables around and still no work.
The power is going through the ISO cable as it powering the head unit, but for some reason it doesn't seem that the power is going to the blue box