Tinkering with the auto and its parts without any adequate information will most likely mess up your auto rather than fix the issue. Not only auto but with it, you also endanger your health and safety. Therefore, everyone is highly suggested to keep manual with your vehicle if you want to do any customization, repair or maintenance job. Consulting Cummins Inline 6 data link adapter for routine maintenance work and repairs is necessary to ensure the success of the job. To buy it you can visit online. There are many websites are available from where you can easily download the manual and save it on your computer. Be sure to get that manual which explanation is easier to understand for you and which one you are most comfortable working with.