Success! Thanks again for the great instructions. I've learned a lot along the way and I think it turned out really nice. A couple notes that I would like to pass on to the next person to undertake this mod-
-The screws that you need to take out require a Torx T20 wrench. I picked up a variable size tool on Amazon for $7.
-Removing the fascia is a lot harder than it seems. I had to use a flathead screw driver on both sides near the bottom to pry it loose. There are some snaps that are a little tricky to get off:
-I didn't have a grinder but was able to pry off pieces using a vise grip. Get the big chunks off and then use a sharp Swiss Army knife to smooth it out. I thought about using a lighter to soften the plastic and then cut but decided against it.
-Be sure to shave off all of the plastic to make a nice flush fit.
You need one of these 12V extensions (Radioshack or Bestbuy would have them):
The GPS is looking for a 12V source, which is then dropped down to 5V within the cigarette lighter plug. Using an extension preserves that. Cut off the plug part and hook the positive end to one of these add a circuits:
You need the small version, not the larger one. They have them at Autozone and Advance Autoparts.
Make sure you know which wire is positive and negative. Use a battery and a multimeter to figure it out...The positive is at the bottom of the adaptor, the sides are the ground.
-I used fuse slot F5 in the passenger fuse box (it is switched) to connect my extension. I was extra cautious and used a a 5A fuse for the main connection, and a 2.5A for the accessory add on:
The ground was a pain to do. The bolt holding the fuse box requires a socket wrench with extension, and the bolt is too long for the nut, so my socket wrench couldn't get a grip. I ended up scratching a little of the white paint off of the fuse box mounting bracket and duct taping the ground to it. I need to find some electrical tape instead....
The GPS works great, and I would bet it is better than the stock system. Considering my salesman said that I wouldn't miss the Nav option because "it is a piece of crap", I believe I made the right decision. Paid $220 on eBay, and probably another $30 for epoxy, torx wrench, circuit and extension. It's a great project! Any questions feel free to ask.