Cummins Marine Wiring Harness Helm Extension 14-Pin - Used

Cummins marine wiring harness — long extension/interconnect harness in corrugated protective loom with two circular twist-lock connector pigtails, one marked HELM. Shop tag identifies it as Cummins harness #3969775; that number is from a handwritten tag and has not been confirmed against OEM documentation, so the application is unverified and the item is sold by photographs, identifiers, and dimensions. Approximate cable run 20–25 ft (estimated, not measured).

Application: probable Cummins marine electronic engine helm-to-engine extension harness; engine family, control system generation, and length require buyer verification.

Condition: used, untested take-out. Loom and connectors appear complete with seals present and no visible cuts or crush damage; no continuity or functional testing has been performed.

Quote is subject to final fitment confirmation by engine/transmission serial number, part number, photos, and supplier availability. 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.