Yes you are correct! These cars are prewired for Nav. They make it virtually impossible to add it afterwards. As a matter of fact I did some homework. I found an online discount Nissan dealership that had all the parts to make it work. Grand total was over 4K! I went to my local nissan dealer and they gave me a total just over 5K! And they wont install it! I was in the same situation so i did a lot more homework...I came up with the following which i also posted on another thread so I will just copy here...Please let me know if you have any questions or interests...
Regards
Ali
All;
Here's one more PC option for you. As you know, InCarPCs, CarPC, Carputers, or whatever the **** you want to call them or becoming more and more popular. Unfortunately, if you are not tech savy, they are not the most easiest thing to build. And once you get the physical hardware together, getting the software to work with the front end and all the external peripherals is also a challenge. Once again, for all the computer savvy people, it definitely is possible. But for those that want to have a box that does it all, here's my solution.
As you know, there are a host of different front end / skin applications that integrate everything to one main user interface. Some of the popular ones are FrodoPlayer, Centrifuge, Media Engine, etc...The one I found most appealing and developed is RoadRunner from Guino. The software is consistently updated and all issues,concerns, questions, and comments are practically immediately dealt with.
So along with Guino's help, we have introduced an all in one solution for the ultimate in car music/video/DVD/GPS/computing/phone/ anything your mind can think of tool! I have been in the car stereo business for some time and have networked this PC to several shops who seem to be all over it. One shop that has taken high interest is West Coast Customs who do all the cars for MTV's Pimp My Ride. The other shop is Speaker Works who have won more IASCA (International Auto Sound Challenge Association) competiitions then anyone else. They even have their own brand of speakers USD Audio! As a matter of fact, they are going to use this PC for their head unit on a bug they are building for septembers issue of Car Audio and Electronics as well as Euro Motorsport and 3 three other import car magazines...On top ofthat, this car is part owned by Zapco who builds very high end Car AUdio amplifiers. There's a chance this will be part of Zapco's show car for CES, Cema, along with many other shows.
So that said, heres what the PC will consist of. The usual Via Epia C3 Processor everyone is using;Ultra Slim Case, 512MB Ram, 80 Gig Harddrive, DVD Rom, Audigy Sound Card (DVD-Audio Capable), WinTV TV/FM card, XM radio tuner, WiFi, Bluetooth and GPS! And all the components are top notch components (Kingston Ram, WD HardDrive,etc). Here are various screen shots:
Car WinXP:
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