The Baldwin's Performance CM849 Standalone Harness is built for the CM849 ECM operating in a standalone configuration with the ECM remaining in the stock location. Whether you are doing a 5.9 Cummins engine swap, building a dedicated competition truck, or stripping unnecessary systems from a performance build, a standalone harness is the clean solution — eliminating all the factory body, chassis, and accessory wiring that is not required to run the engine.

Every harness is built with the highest quality materials available — a premium OEM-grade build designed to outlast factory wiring in every measurable way. Construction starts with all new OEM connectors and terminals paired with TXL automotive wire featuring chemically cross-linked polyethylene insulation engineered for high heat environments. The harness is flame resistant, moisture resistant, oil resistant, gasoline resistant, diesel resistant, grease resistant, and resistant to most solvents and acids.

From there every harness is fully wrapped in Tessa tape for an additional layer of protection against cuts, abrasions, and environmental hazards. Over that is a full loom of 10 mil PET semi-rigid split braided loom for structural protection and a clean professional appearance. Finally each harness is finished with dual wall heat shrink at all termination points to lock out moisture and ensure long-term reliability.

The result is a standalone harness built to run your CM849-equipped 5.9 Cummins cleanly and reliably in any application — swap build, competition truck, or purpose-built performance engine.

Designed for the CM849 ECM in the stock location. For in-cab ECM relocation see the CM849 In-Cab Standalone Harness.