Here is an idea, go over to DIYMA.com and do a search for threads started by "simplicityinsound". You may have to register to view his stuff. No biggie, it's free. He also has a web site, http://simplicity.elitecaraudio.org/ . His build threads are very detailed and will give you some nice pictorial examples of wire installs. Just an idea.
I prefer to cover my wire in TECHFLEX, opposed to wire loom. I also use heat shrink instead of electrical tape. Just a personal preference. Here is a great and relatively cheap source on ebay: http://stores.ebay.com/FURRYLETTERS
Good luck man, take your time! It will pay off in the end.
- Scott