MSD has wiring diagrams for all their units on the website, they even offer a book for those who don't like computers. I have never been happy with the kit approach to wiring, I simply mount all my boxes and modules, get a piece of paper and draw out the wiring connections needed. Do a little figuring on what gauge size wire to use and then start building a harness. My main problems are usually the lack of enough different wire colors so I don't have to use same color on different circuits. To get a good clean harness, no substitute for making your own from scratch, just takes a little planning. Lay the wires in place and just put one piece of tape here and there to keep the harness formed. Solder and heat shrink all connections, and don't completely tape the harness until it all works like you want.