Mr. Dalton. I appreciate the advice and will build the tool and read further pins. Regarding the error I got with the emissions (EGR fault). This is different than the tech told me about in July when the light came on. He said injector 1 fault was the code. Now this seems to me like two light warnings and two different messages. So my big ticket question is - can all of this just be the wiring problem and there actually is nothing wrong with the car. I agree, I need to replace the harness, but just am wondering IF that can be my only problem or if it is likely there are other things going on. WHen these harness' fail is this the typical type of thing that happens that being an array of warning lights somewhat at random?? Thanks.