Update 1 - September 16, 2005
I was able to track the GPS antenna just fine within the roof liner. Simply removing the rear interior light assembly attached to the liner (easy job), immediately showed the wires wrapped in foam, and attached to the car's roof with tape. Remove tape and foam, and have 2 wires. One for GPS and the other for XM. Need to see how to I can get to it and route it to the driver's side of the rear pillar. I think that is the way it is going anyway. Will do more tonight.
As for the XM module, I have un-hooked the rear trunk panels on both sides. I have yet to find the XM module on there. Should have been in the driver's side, but guess it is not.
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On a side note, I've found the Lojak system though. I thought these things were suppose to be hidden somewhere. Maybe I should not post this info here.
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Update 2 - September 17, 2005
Please see below for teaser pic.
Keep in mind that the unit is not fully in place. It is currently sticking out by about 1+ inch (3cm). Just testing it before I put it all in place.
Things like the antenna is the hard part. The splicing of the wires was the easy part. The instrument cluster is not bad. All you need to do is remove one of the connectors, and still enough space to fish through the GALA wire. I went with 18AWG wire, but 22AWG should have been just fine.
Sound:
I put a CD in, and the sound is a whole lot better than the Symphony II unit. Just for the sound alone, I think this unit might be just worth it. Heck, it's not a kick arse aftermarket system, but it was quite an upgrade.
Navigation:
I'm still not sure if it is all in place. When I left my garage to turn on the unit (garage is underground), the navigation portion seems to work just fine. I choose English (accept button), and I was done. At least I think. When I chose to go to Clair Audi Service, it gave me the route on the screen, and it recognizes that I'm in Boston. However, when I check Nav-Info, it tells me that I'm not on a digitized road. Not sure what that means. Will check with the fellows on NavPlus.us to make sure all is good.
Vagging:
I did not seem to need any of it. I did go into the Instrument Cluster module, and set it accordingly, but it seemed to be working before. I'll probably leave it outside overnight after I'm done putting it all back.
Miscellaneous:
This darn thing is hot looking!!! Can't believe I really waited this long. Big bucks for sure, but I have to admit that it does make the car more luxuriously looking on the inside.
Some installation hints:
1. A couple of the installations I used as guidance, fall a little short. I've had to read them at least 5 times to make sure I was doing it correctly. As far as the wires for the GALA work, the instructions are spot on, and without any issues. One of the things the instructions seem to fall short on is the GPS antenna part. This is why I'm not sure I've done this correctly yet, but will check. Knowing this, I'll make sure to not make the same mistake on my write up.
Sorry if the pix is not the best. Will post more soon.
http://www.rs6.com/gallery/data/500/46DSC_6106-med.JPG