I finally bought - got an '05 5AT Diamond Graphite and I love it. I wasn't interested in the nav system, but didn't realize until I got the car that the nav screen is also used for fuel mileage and other car settings. So - is it feasible to find parts and retrofit the Nav system in? Not something I need to do right away, but I could at least start looking for parts.

Thanks in advance for any info.

 

Yes but it takes a lot of time and money. Someone on here did it and has a full thread. It cost more than a nice aftermarket DD install and has way less risks.

 

don't even bother... the guy would did it had to rip is whole car apart and it ended up costing too much. Just get a nice aftermarket deck, they are usually better anyway

 

If I had to th chance to do it agian, I would have not gotten the navi option on my car. It was $3K for the navi option I think, I would of just gone DD with a Pioneer AVIC-Z2 .

 

I think soemone on here did it himself and costed him about a grand.... Id rather spend 300-500 on a garmin or tom tom.. the stock navi in the 03-07 coupes suck

 

Yeah, I did it. I also did a mix/match by putting an '05 Navi into my '06. Reasoning behind it was to stick w/ the OEM look and keep my car from becoming a target for break ins that a Tom-Tom glued to the dash or a full double DIN unit would attract. My G purchase was delayed a month by a smash-'n-grab on my Prelude that did almost a grand in body damage for a decade old CD player and my change cup. Car was parked at my apt outside of my garage for the first time in a year.

I originally planned on the double DIN swap when buying the car since the dealer didn't have any Navi models available at the time. Looking at half assed box that people had to use for keep steering wheel controls and the cost of new dash pieces and having to solder to fix the dual climate control, it became too much trouble given the possibility of coming back to a car w/ its dash gutted again.

As for the fuel mileage features, it depends on the model navi unit you get. For some reason the one I bought from another member doesn't have that feature. I suspect he may have swapped out the navi unit for the one out of his '03.

The biggest issue you'll find is that the navi is built into the wiring harness meaning you have to find a complete wiring harness or at least the harness plugs. My setup came w/ the complete harness and i did some trimming to separate the harness out since the '05 - '06 harnesses are completely different. It took me a few hours of reviewing the service manuals to get the complete wiring diagram...which I did before starting the project.

The unit itself is a bit similar to a stereo in that it needs power, acc, ground, and illumination. Additionally, it needs a speed sensor wire from the gauge cluster and voice lines to the back of the head unit. The hardest part was probably dismantling the passenger side of the dash and then running a wire all the way across to the gauge cluster for speed. I've been tweaking cars for a while so I didn't really hesitate to tear apart my month old 30k car. If you're a novice, have a stereo shop do the AVIC setup or just get a Tom-Tom...its features are probably superior anyway.

The double din setup is definitely very clean and probably easier but it costs probably double what I spent and you'll still have to do some grunt work if you want to keep your dual climate button. It's also not perfect if you ever have to park in a questionable area which can be pretty much anywhere. They could definitely still take the OEM navi but its a good bit tougher to sell than a Pioneer AVIC. I paid under 1k for the setup minus the dvd.

 

imo i think it would take alot of time of money to try and retrofit the stock navigation system.. With all the aftermarket units available for much cheaper than the factory navigation is offered at, your better off buying aftermarket. Alot of them offer more functionality than the stock navigation system. I recently purchased a 2005 as well that came with the factory navigation installed, it is a nice system but its alot different than my father's aftermarket garmin he has. The stock navi does a job fine no doubt, and does have some nice features like you say like gas mileage and maintenance schedule, and is very accurate too, but it lacks alot of features aftermarket units have. It wasnt the deciding factor for me when I purchased the car to have factory navigation. Maybe checkout another G with the stock navigation, play around with it see if you like it, then determine if its worth your time and money to take apart your interior + find all necisarry equipment. Good luck.

 

Here's the link of when I ran into some problems b/c the unit wasn't updated.

https://g35driver.com/forums/g35-sedan-v35-2003-06/133311-05-nav-into-06-sedan-running-but-having-problem-need-help-05-navi-people.html

Project took me about 2 days including time to research the wiring harness differences. Also had a rough time pulling some of the pins out of the harnesses. They need to make those tools more widely available.

Other than the grossly inflated price I paid for my dvd b/c I was in a rush, the project wasn't too bad and I didn't roll it into my paymnt.

 

Thanks for posting all of that again on here to help with future questions!

 

what about a carputer? Has a clean look and looks stock.

 

you can fit a single din like an avic-n3 in the cubby where the stock navi would be. when your parked you can replace the cover and it looks like stock with no navi. no reason to break in!!!

ive seen a couple guys who have donw this and i think its the best option.

the double din is nice. but expensive for all the crap you gotta buy to fit it in there. plus IMO the screen is too low.

with a single din in dash in the stock navi spot the screen would still pop up and be right where the stock navi screen would be.

 

Thanks for all the great info guys - seems like this might be a tad bit more trouble than it's worth.

I'll do without mileage stuff and look into the double DIN option y'all mentioned (as of this moment, that means nothing to me). I'm quite handy with cars - but know exactly zero about A/V stuff.

Oh, BTW - I did find all the necessary hardware online from an OEM parts dealer - except the wiring harness. Total only came to $5k.