Hi I used to have a fat Naviceiver from Pioneer and get myself the AVIC-F930BT. In another thread I have already asked questions about various brands of 2DIN radios and now it has become an expensive Pioneer Yes but now enough, I urgently need your help. On the ISO plug hang still some cables around which have to be connected otherwise the Pioneer radio does not unlock all functions. There are among other things the handbrake cable, where I have found thanks to SuFu, however, that I have to connect it either to the PlusPol or to the body mass to watch during the ride DVD (not I but my fellow drivers ) or even to be able to use the Navi functions. However, I do not know where cables for the signal from the return path, as well as the cable for the Tachopuls. If I do not connect these cables all the radio does not work properly. Please tell me how and where I connect the mentioned cables. I would not be very grateful for the installation of yours. I have not been looking for the help since Florian.