I know about your problem..
The problem is discusted in a german forum (car-pc.info)...
The Manufactur send the wrong cables for the TFT/Touchscreen with it..
Replacement is on the way, but stucked in china because of the typhoon..
You should ask your reseller about this issue.. he should already know about that...
there is another thread for this:
http://www.mp3car.ws/vbulletin/showthread.php?t=31510