Its hard to understand what you are getting at. All I know is that with my OBDII Scanner I have an OBD II connector cable that plugs in under then Steering wheel, which then goes into my palm pilot. You then have to sync the OBD II program with your ECUs OBD II Signal. If you already have the cable that plugs in under the steering wheel and you still don't have a connection, either you have the wrong type of connector, the wrong program, or some other software problem. The only other thing it could be is that the 04s use a different system. That's all I can think of.