The Firepunk Engineering standalone wiring harness is made to work with the 849 ECM in the stock block mounted location.

The Firepunk Engineering standalone harnesses is made to work with the 849 ECM in cab location.   Excessive harness length may incur additional cost.

03-09 Cummins ECM socket terminal pin with 36" of 18ga OEM wire. Works with CM849B, CM2100, CM848 ECMs and uses an OEM Deutsch terminal.

The Firepunk Engineering standalone harnesses is made to work with the 2100 ECM in the stock block mounted location.

The Firepunk Engineering standalone harnesses is made to work with the 2100 ECM mounted in the cab of the truck   Excessive harness length may incur additional cost