The Kustom Truck Cummins ECM Jumper works with the CM870 and CM871 engine electronics. The jumper harness plugs into the base bench harness at the bulkhead connector breakout with a Deutsch, 21 pin male connector. The other end of the harness plugs directly into the Cummins CM870 or CM871 ECM.
In addition to this ECM Jumper you will need to select the Base Harness and appropriate Battery and Throttle Jumpers and to have a complete system.
NOTE: This particular ECM Jumper harness works with Cummins engines utilizing CM870 or CM871 engine electronics.