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A coiled black wiring harness with multiple connectors and model number 56397

Curt Manufacturing

Curt Manufacturing 56397 Custom Wiring Harness

SKU CH-3NX2-ZJJTG

Custom wiring harness connects trailer lighting to the vehicle electrical system

  • Product typeTrailer, Plow & Towing Equipment
  • Custom wiring harness simplifies trailer electrical connections
  • Model 56397 ensures precise vehicle-specific fitment
  • CURT brand delivers reliable towing equipment performance
  • New condition guarantees full factory functionality
  • California Proposition 65 compliance disclosed for informed purchasing

Custom Wiring Harness 56397

This Curt Manufacturing wiring harness carries part number 56397 and is supplied new. It is designed as a custom-fit electrical connector for trailer, plow or towing equipment installations.

Vehicle owners adding factory-style trailer lighting

The harness suits owners who want a direct-fit solution for their specific vehicle without cutting or splicing the original wiring. It is not intended for universal applications where a custom connector is not available or for installations that require additional circuits beyond the factory layout.

Prop 65 chemical notice

The product carries a California Proposition 65 warning because it contains a chemical known to the state to cause cancer and birth defects or other reproductive harm. This notice applies to the materials used in the harness and does not change its electrical function under normal towing loads.

How it compares

Measured against everything we stock in General Yard & Utility Tools, at today’s prices. Recalculated every night.

Price $71.99
Pricier than about 69% of the 1,487 comparable items (median $32.99).

Specifications

Product
Brand nameCURT
Product typeTrailer, Plow & Towing Equipment

Questions about this item

What vehicle connectors must match the 56397 harness for it to plug in directly?

The 56397 is a custom wiring harness built for a specific vehicle application, so the factory connector on your vehicle must match the harness plug exactly.

Will the 56397 harness work with an older trailer that uses a standard four-pin flat connector?

Yes, the 56397 provides the vehicle-side connection; you simply plug your existing trailer's four-pin flat connector into the harness socket.

How can I confirm the 56397 harness is functioning correctly after installation?

Connect a trailer or test box, then verify that running lights, brake lights and turn signals on the trailer illuminate in sync with the vehicle controls.

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