Hi. I am Marin from Croatia. Connect Nav+ finaly comes in my FIAT Stilo tomorow. Original wireing is so expensive for me and I would like to make wireing by myself. I allready made time delay unit and installed into my car. I have microfone from my old Siemens pro GSM wireing. GSM antenna is no problem for me allso but i dont know anything about "GPS" antenna for navigation. Is it in original wireing active antenna or passive? Can I use passive Garmin car GPS antenna:

http://shop.garmin.com/accessory.jsp?sku=010-10702-00

That antenna is not expensive at all. Can you help me please?