Help with car stereo

[LGdrama]

need help/solutions for something I'd like to do to my car stereo.
First off I have a 2006 Audi a3 FWD manual car with bose symphony sound system. I want to:
A) put in a stock (newer model) navigation head unit. I was hoping that it was just a straight swap but while reading up on it - it seems more complicated then that. Does anyone know what I need, if it's possible? Id prefer not to take it to a shop to do the install and prefer not to go aftermarket as I like the stock look.
Or
B) add in a AUX input. Ive looked on the Internet to see if there is an aux input in the rear of the head unit , but it looks as through I have to buy a AUX input converter. The problem there is, I've found 3 and not sure which one is for my vehicle. The links are below:
http://www.logjamelectronics.com/pieaashar.html
http://www.logjamelectronics.com/pievwraux.html
http://www.logjamelectronics.com/pieaudaux.html

Any help would be MUCH appreciated! And I apologize in advance if none of this makes no sense, as I have no knowledge of at stereos

 

[rmemedic]

I have a 2004 Canyon.

Put in a Kenwood 5160 head unit. it's a 6.7" screen.
Features: Sirius (with the extra box that is tucked in the dash), GPS (garmin which is why I chose the Kenwood), DVD music and Video, a reverse camera, inputs to play something like a playstation, outputs for another screen if you wanted one, USB input, and plays my iPod music and movies. iPod is hidden somewhere as the control is off the head unit itself. And you can change the colour of light for all the external buttons.
I think that is all the features of it. It looks like it belongs in there, very clean install.
The only "difficult" thing about it is doing your wire connectors from the head unit to the certain adapter to your specific car, which is easy.
You might need a chime box like I do, because the stock head unit plays your warning beeps from your vehicle (like seatbelt or door open) on the speakers.
Also, most head units have a "lock out" so you can't have the video playing unless the parking brake is on. This, is very easy to defeat on this model.

I'm no wiring genius, very simple. It's clean and there are no external wires that you can see.

 

[LGdrama]

Thanks for the response. Do u have pics of Ur unit? Arrg .. I mean stereo?
I'm really all about stock.
This is what I'm looking into getting or at least something similar

 

[GreyGhost]

VW ties their radios into the computer. What year is the new head unit from? Make sure you talk to someone that knows VW's to see if this swap is even possible. Switching to aftermarket radios takes the computer completely out of the equation so that works, I just don't know if an old vw can take a new vw radio.

Fwiw, on a 2003 vw I am pretty sure you can use the cd changer input lines as an aux input. You pull the radio out, solder a connector (or extension cable with headphone plug) to the wires and you are good to go. My radio decided it thinks the input voltage is too low (it isn't) and stopped working almost 200,000 km ago. It is nice that the radio can tell you why it's not working, but a giant pain in the *** that a failed sensor can take out a working part.

 

[Hardwrkr13]

Do yourself a favour and join DIYMA.com and post up this question.

Bose is a PITA. Gauranteed various speakers throughout your car are of various ohms so you're stuck going through your crappy Bose amp. And btw that amp likely does all the processing so you can't just add an aftermarket head unit with a $10 wiring adaptor (it's going to be a $100+ piece and then you'll have to buy another expensive adaptor to make your steering wheel controls work). Worry about the AUX adaptor when you decide on whether you're going to go with stock or aftermarket source unit. If NAV was an option through the upgraded Bose stereo then you should be able to do the upgrade fairly easily with the NAV unit from that year. To get a newer stock unit to work will be much more difficult.