i might get a factory navigation(used) but the seller said that i need to get the CD sofeware for navigation

what's that mean? how much is it? how does it work?

 

Yes,the monitor is connected to a dvd player that only plays the nav dvd!

 

Not sure if it will work in your car. Might want to check fully into this before you spend your hard earned $.

I have not seen a Z after fitted with OEM Nav. I have always read it won't work. I am not an expert, but I doubt it will work even with a NAV disc.

Your problem would be a hardware prob, not a software problem.

 

You will need special factory harnesses

 

It's a DVD, not a CD. And, I would wonder why he doesn't have the DVD. I believe they go for the overpriced amount of $200 or so at the dealership.

And, as others have mentioned, there are probably hardware issues. The navigation is not an option available outside of factory installation so it's anyone's guess whether the thing will work without some parts or another. Moreover, you would want to have the disc and make sure the thing works before you pay for or at the time of installation of the hardware. That entails the initial investment of the disc in your case.

I'd be very careful about this transaction. Something smells bad.

 

I paid 180 for my updated nav disc. I wonder if these can be ripped?

 

I was thinking about selling my factory nav system because it pisses me off. If I were you, I would just buy an aftermarkey system. Way more options and more compatible with aftermarket stereos. Just my advice.
-Steve