I recently got an imported car, a Nissan Presage that came with what looks like a GPS screen. Upon closer inspection, I found out that the screen is not factory built as its brand is Mitsubishi (there's also a Mitsubishi antenna on the top of the car). I noticed that there are 2 main buttons sitting next to each other, one says "TV", the other "NAV" (and a host of other buttons like volume controls etc).
I played around with it and when I pressed the TV button, it actually picked something up but it was mostly static. Nothing happens if I press the NAV button.
I was told that it is possible to convert both the TV channels and navigation to NZ's TV channels and NZ maps. Is this true? If so, anyone has an idea as to how to go about doing it?
Thanks very much in advance.