wuzin: really? How do you know which cables I need ?

))) I might have a very special car.
I do assume that the VSM module comes with the cable between the VSM and navi, but where will the stereo sound connect, because:
- it might connect to some plug in the trunk if one has a DSP or the cabling prepared for Sirius/xm/whatever you have in USA. I don't have dsp nor any cable like that on my trunk.
- it might connect to the CD-changer plug at the middle console, like the iPod kits. I have no such cable on my car, and trust me I've almost disassembled it all.
- it might connect to the aux kit, if one has it. Fortunately I've asked for this one.
- it might require a direct connection to the radio to get access to the aux pins (if the aux kit is not installed) or to the cd-changer pins.
This is exactly one of the questions I asked Tom... In case the VSM can connect to the CD-changer cable, if he could provide some kind of connector/pins to connect to the radio and take the audio back to the trunk.
So.. where does the sound connect then?