Cummins ECM Jumper Harnesses

Bench-testing Cummins ECMs off the truck is a smart step in engine conversions or repowers—verifying function early prevents installation issues, codes, or downtime from faulty modules. Kustom Truck Parts' Cummins ECM jumper harnesses connect seamlessly to our base bench harness, providing the exact pinout matching needed for accurate diagnostics on key generations.  Our Cummins ECM Jumpers support Celect Plus and CM570-CM2450 ECM electronics.

These precision-engineered jumpers ensure reliable power/signal connections for safe bench testing—ideal when installing a Cummins ISX, ISM, or N14 and need to confirm programming and proper configuration before installing the engine into the chassis.

Browse below for the jumper that matches your ECM generation. Pair with our base bench harness and battery jumper for a complete testing setup. Unsure about CM compatibility or pin needs for your conversion? Contact our team—we're here to help.