Just upgrading my wife's x3 head unit to a jvc avx44 (with Dab) and I need to install a dab aerial in the front window. I'm struggling with routing the wire from the A pillar to the head unit. I want to go down the back of the A pillar and behind the glove box but I can't seem to find a way aroud the edge of the dashboard (the bit next to the cup holder that the door shuts on to). My other idea is to see if there is room to get the cable inbetween the dash and windscreen is this possible.

The head unit also runs dvd's so I didn't know if anyone has experience of fitting headrest screens or is this a job best left to the pro's

I'm starting the install on Sunday so any help would be appreciated