When doing my 3.8 to 4.6 swap EVERYONE told me "You need to change your dash harness..blah blah blah." When I all these people told me this none of them had even done this swap. It was all just rumors. Well glad to tell you all that as soon as we put in the 4.6 ECU guess what. The ODBII connector that came with my 94 3.8 worked just perfect. Nothing needed to be changed. So dash harness is the same, well at least when it comes to the ODB II connector goes. Another example of how people say things that they know nothing about.