Just picked up a 07 G35 coupe with nav and want to put aftermarket system in. I have a few questions. I am a noob so the simpler the better. Ive looked through forums and the stuff is scattered about and thought maybe everything could be answered here.

I have an ipod and want it displayed on the new head unit

1. With the Bose system am I going to hear static when installing a new head unit. If so is there a way to eliminate this besides buying new amp, rewiring, and new speakers?

2. Will I lose the voice on my nav? and if so is there a way to fix this?

3. What happens to your bluetooth after instaling. does the factory mic still work and what about all the steering controls?

A quick rundown of everything I need to not lose any of my cars functions as well as some good head units would be great as well.

 

1) A minority have had line noise when replacing the Bose headunit. I have not experienced it, it may be other problems that are blamed on the Bose, or it may be incompatability with specific head units.

2) Yes. To keep it you have a few options:
a) Get an Alpine head unit that supports the versatile link (Ai-Net) and get the KCA-410C adapter. Wire #24 (Red w/Black stripe) goes into the interrupt input on the 410C Wire #32 (Blue w/White stripe) goes to the center terminal of a male RCA plug. Wire #30 (White w/Black stripe) goes to the outside of a male RCA plug. Your new RCA plug goes into the RCA input of the 410C, and the 410C and its interrupt wire go into the Alpine headunit.
b) (Requires aftermarket amp) Wire #24 to the positive coil side of a +12v DC double pole double throw relay. Ground the other side of the coil. Put Wire #32 and #30 on the normally open terminals of the relay. Wire the left front line-level speaker output from the head unit to the normally closed termianls of the relay. Run the other side of the relay out to your amp. This will switch the left front speaker only to the nav voice when guidance is given.
c) Connect a small powered speaker to wire #32 and #30. Hide this speaker in the dash so that you can hear it from the driver's seat.
d) Do option c, but if your head unit has a mute input that mutes the stereo when receiving +12v, connect wire #24 to it. This will mute all 4 speakers, letting you hear the output from the powered speaker. If you have an amp installed with a mute that operates on +12v, you can also do this. If your mute on your headunit/amp needs to be grounded to mute, connect the +12v from wire #24 on the positive coil side of a +12v DC single pole, single throw relay. Put the mute wire on one side of the relay and ground on the other side.
e) Go without Nav voice.
f) Install DD with its own nav voice, use stock nav to monitor gas mileage.

3) You can wire up the factory mic to most aftermarket units, if you put a 3.5mm jack on it.

4) Steering wheel controls work if you install the appropraite PAC SWI adapter, and your head unit supports bluetooth controls through it.

To keep your functions, you need:
JDM (or metra if looks aren't important) double din dash adapter kit
Metra 70-7551 (Bose) or Metra 70-7550 (non-Bose) wiring harness
Nissan diversity antenna adapter
PAC SWI-???? steering wheel adapter depends on brand of head unit
Soldering equipment