You just need a diagram...I replaced all the wiring on a 1993 Mazda 626 from the front bumper to the dash. 4 big looms. If you have the "real" shop manual tra

You just need a diagram...I replaced all the wiring on a 1993 Mazda 626 from the front bumper to the dash. 4 big looms. If you have the "real" shop manual tracing problems is easy...not the Haynes or Chiltons (I have the original shop manuals for 2 of my 4 cars, including the electrical supplements, all wire color codings and methods to test every sensor are in the books. I will not argue that fixing the main relay on my father's 1962 Thunderbird was way easier (I won't even get into the difference between dropping the fuel tank vs. a newer car) I believe for the most part newer cars are not much harder to work on. I really like what Volkswagen did with their VAG-Com stuff, really makes troubleshooting easy...like stupid easy, plus it interfaces with the laptop for datalogging.