Your best bet imo is to put together a nice wiring repair tool kit. Get some 1/16" 60/40 rosin core solder. A 35W or higher soldering iron. Some splice clips, heat shrink, terminals, flux, various wires gauge and a heat gun. Save yourself some money and just do it up nice. If your harness is hacked big time get a donor from a junk yard. Painless and a few other companies out there make certain harnesses but they aren't cheap.