I went to Napa Auto Parts and bought the wire in spools and plan on making my own. The harness that is install has so many extra wires taped back on themselves that cleaning it up would be a bigger pain in the a$$ than making a new harness. Napa had every color I'll need and Summit has all the colored flex tubing.
My main thing is wiring up at the motor so the harness can be a clean run to the dash. Single wire sending units and ignition wires, then the alternator wiring and the starter.
thats what i did for mine, bought a bunch of diff color wire, sat down and made a list of everything from gauges to ignition to alt to starter anything that needed a wire to it was written down, then drew out a generic pic of boat with where everything is located and made my own schematic (sp?), transfered that to a new piece of paper with colors for wires and starte measuring and cutting, loomed everything together to run it, looked at the schematic and new where every wire went to, and if ever there is a problem i can easily find it. i hope

, second time i have done it to this boat, easy both times, just wanted cleaner the second time around