factory wiring good.. but theres a few things I'd change on my own rig. mostly simple stuff that really wouldn't effect the schematics. the way the starter wires slop down the fender well could be better. the vacuum switch wires could be removed and cut with a short wire and connector under the dash. the way the distributor to coil wires are, could be improved. i also plan on removing the old 40amp alt with it's external voltage reg and replacing it with a 60 amp newer yota alt with internal regulator. all my wires are old and messed with, so i don't feel bad doing a few mods.