That kit is made by American Autowire, one of the best. I have one from them in my 1956 and it was easy to install and they have GREAT tech support.
All of their wires are marked about every 10" with there location name spelled out like Left Front Turn, Tach, Hi-Beam etc.
Each wire on the harness will need to be custom cut to length and have a terminal end crimped on. The kit will come with OEM "F" type terminals so you'll need a high quality crimper to give you professional results. I got my crimper from Dell City and it was about $40 delivered, check it out here.
http://www.delcity.net/store/Open-Barrel-Terminal-Ratchet-Crimp-Tool/p_714008I would use them again.
Mike B
