Hello, I've decided to change the default Auris 2009 stereo, with a Pioneer Double DIN (Pioneer AVH-280BT) which has a USB port on the back. Question - how easy it is to take the USB extension cable from the back of the stereo to/in the upper glove box, just as it is in the newer Auris models:   And do you think it would be better to integrate such a port there, instead of just leaving the extension cable end inside the glove box?