building my own wire harness

I've thought about this myself only because I like to save money for things that I absolutely cant' do myself. Time is the biggest cost, but make sure you have a good (inexpensive) source for the wires an connectors or you will spend just as much on the pieces as you will on a kit. Look for an electronics surplus in your area, they will have tons of colors to choose from and really cheap too. I've also toyed with the idea of pulling a harness from a new car and chopping it up for the wire (millions of colors, way more wire than I'll need, a power distribution block and fuse block to boot) but then again I'm just thinking out loud.