T.... you are really going to hate me for posting this, but I got a new toy for you to play with!
It's called the ISIS chassis wiring system.
http://www.isispower.com/
For 900 bones, this seems like the best idea ever! I am a volvo tech, and this system is really simmilar to the way the volvo electric system is laid out, yet a LOT simpler because of the lack in relays, and a ton of other shit.
PS: I'm hoping I didn't just open pandora's box....