i was considering a 1wire, and then i decided that the wiring for it would be noticibly different, and i was sick of doing wiring after hand wiring an entire other project i was working on.... so i just bought all brand new resto wiring for my car so it just plugged right in in all the same spots as the old ratty harness ... then again thats a benefit of having a mustang is theres more parts availability on them than a TON of cars