I went ahead and snagged some pics of my wiring that I have, just so you guys have a good idea.
You can barely see the wire here. Its sitting just above floor level on the side.
This is up under the dash, passenger side
Coming out into the trunk
Going through the firewall, left of battery
I don't have it hooked up ATM because my stereo isn't in. (I pull it out at times for autocrosses and the like)
Give me a bit and I'll try my paint skills at a wiring diagram, and explanation of how I'd wire it.