Engine installation harness for installing a Cummins ISX engine (CM2250 engine electronics) into a Pre-NAMUX 2004-2005 Peterbilt truck with Cummins ISX CM870 chassis electronics.
NOTE: This harness is only compatible with a Cummins ISX CM870 based Peterbilt Pre-NAMUX (analog) electronics chassis. If you are uncertain of your exact chassis electronics please call for fitment confirmation.
Peterbilt uses many variations of chassis emission harness connectors on the factory chassis harness. With that said, the emission harness breakout connectors on this engine harness may or may not match directly to the connectors on the chassis. However, the harness will include a pinout sheet for the emission connector breakouts that provides the required information for you to match up to any existing or additional chassis emission connections required.
