Cummins Wiring Harness With Battery/Starter Cables (Tag P/N 3921789) - Used

Cummins wiring harness assembly with heavy-gauge red positive/battery-starter cables, ring-terminal power leads, relay/fuse module, and sealed multi-pin and Weather Pack style connectors. Attached shop tag reads P/N 3921789 (Cummins harness) — number requires verification against the Cummins parts catalog before ordering. Application: Cummins diesel engine electrical harness; exact engine family and installation are not verified and it is sold by photographs, identifiers, and dimensions. Condition: used take-off, appears complete, untested — no electrical testing has been performed and no operational claim is made. Buyer must confirm fitment by part number, photos, dimensions, engine model, serial number, and application before purchase. Used marine part sold as-is unless otherwise stated. No returns on electrical, used, special-order, or installed parts.