This is for you folks that might be looking for info on replacing the OEM stereo w/ sync with an after market system.
My Edge is the SE model with the very basic stereo (4 speakers) and the sync with the 4.3" screen.
I started by doing a lot of research on these forums and online. I found that there basically were two options to choose from:
1. Metra 99-5829CH dash kit that lets you keep some sync features (AX-ASWC-1, AX-FD02, AX-FDBOX2 also required)
2. Scosche FD6205CHB
For both setups you need to get a couple of antenna adapters (one for the radio, Metra 40EU-10, and one for SiriusXM, Fakra Plug with Male Center Pin in to SMB Plug with Female Basket). You only need the SiriusXM one if you have a stereo that has SiriusXM and you want to use the car's factory antenna.
The new head unit that I put in is the Pioneer AVH-4100NEX. (if you want SiriusXM you need the add on SiriusXM tuner, SXV300v1)
The Metra stuff costs about $100 - $150 more than the Scosche kit does. I went with the Metra kit first, but after several calls to their tech support and rechecking the wires several times I was not happy with the results. The dash kit fit nicely and the AX-ASWC-1 box did great for the SWC, but the AX-ADBOX2 sucked. Also there were some quality issues with the dash kit. So I returned the dash kit and will be returning the AX-ADBOX2.
The Sync features that were kept with the Metra kit are the clock, outside temp, and Bluetooth for the phone. I gotta say that it was not worth it for the extra cash.
I then bought the Scosche FD6205CHB on eBay and I wish I had done that first. It was a breeze to hook all the wires up to the stereo and install. The process for programming was very easy as all you have to do is pick from a few selections on the setup screen. I did have one issue where the front left and right speaker wires were swapped on their connector, but that was easily fixed.
The Scosche kit looks better and has all of the right controls for my Edge model unlike the Metra kit that had extra buttons and such that were useless for me.
Here are some pics of the Scosche setup.