Check out the forums at RomRaider. Did you set your definitions directory for ecuflash and romraider? The defaults do not point to them. If you have win7 you have to set the properties for each shortcut to run as administrator. How to do all this is explained in the RomRaider forums. For '03 to just read and datalog I don't remember having to plug test connectors. Only when flashing do you need the flash plug AND the test connectors plugged together. The forums over there are extremely helpful and user friendly so don't be afraid to ask.