Used on Cummins ECMs that are CM850, CM875, CM870, CM871 or CM876. This bypass harness is used to connect directly to the ECM instead of going through the vehicle dash connector. Typically found in the 2003-2008 model years. This includes the ISX, Signature Series, ISB, ISC, ISL, and more. Please call Triad for the appropriate software to reprogram Cummins ECUs with these cables.