Ok, here you go. I hope this helps. I have a few more pics, but I'm not posting them right now because they were pretty repetitive. If you need other pics though, just let me know.
The red arrow points to where the power wire goes through. The green one shows where I unscrewed that thing to have a little more room for my hands down in there. Unfortunately, I lost this screw and that's why it's still loose.
Here's a closer up view. There are these long nipple things on there. I cut open one of those and forced the wire through there (with the help of a little vegetable oil). To get to that spot from the inside of the car, you're going to have to take out the glove box and the other plastic pieces around it. Kind of a pain in the ass, but it's the best way.
Here's the fusebox that I tapped into for the remote wire. The slot I used was called Radio 2 or something like that. On the right side of that black piece, you can see the red fuse that originally went in that space. Someone else can give you a better description of that maybe. (By the way, if you're using a line-out converter for a signal, you can buy a more expensive kind that gives your amp a remote power signal. More expensive, but one less hassle.) This fusebox is on the driver's side up front. The big blurry black thing in the pic is the parking brake.
And lastly, a pic of the trunk. Not a great pic, but just wanted to point out where that power is coming out from. (the red one is the power wire - the big blue is the ground) If you pull back that carpeting stuff, there's a way to snake the wire down there. I had my friend feed an old power wire I had down that corner of the trunk. (more explanation after this pic)
So then I sat in the back seat and lifted up the seatback where those arrows are (this is on the rear passenger's side seat). I reached up in there and eventually caught the wire. Then I used some tape and taped my power wire to the old one he was feeding me, and he pulled it back up into the trunk. All the wiring is very easy to hide. I've installed stereos in 4 of my own cars and helped w/ 3 or 4 of my friend's cars and I've never had an easier time hiding wires.