I also have to go to the office for about 3 hours, but my buddy is here to work on the Z, doing some stereo wiring and electrical upgrades:
Here's what I'm doing.
Fun stuff, should be the most rock-solid electrical system ever in a Z, lol. J/K, I know someone will probably chime in to show me something better, but it will still be solid and kick-arse - I'm a big fan of "overbuilding".