[kountzecobra]

I have never built one, but I had to completely strip mine and add and remove circuits to suit my particular application. I don't think you can build a complete harness for what a Painless Wiring harness with fuse block costs. One problem with building your own is the lack of different color wire insulation to distinguish one circuit from another. (Standard building wire is not acceptable, as it is not flexible enough.) A complete 12 circuit wiring harness with fuse block is only about $260 from Summit Racing. Wiring is not a place to scrimp and save a few bucks- an electrical fire can completely destroy a fiberglass car. Hope this helps, David Shelton.