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Curt Manufacturing 56343 custom wiring harness coiled in plastic bag

Curt Manufacturing

Curt Manufacturing 56343 Custom Wiring Harness

SKU CH-NHJN-S8WZF

Custom wiring harness 56343 connects trailer or plow lighting to the vehicle electrical system

  • Product typeTrailer, Plow & Towing Equipment
  • Custom wiring harness ensures reliable trailer connections
  • Model 56343 designed for specific vehicle fitment
  • New condition guarantees full factory performance
  • California Proposition 65 warning for cancer risk awareness
  • California Proposition 65 warning for reproductive harm awareness

Curt 56343 Custom Wiring Harness

This Curt Manufacturing 56343 custom wiring harness is a new towing accessory designed to connect a vehicle's electrical system to a trailer or plow. It provides the essential lighting and signalling functions required for safe road use. The product arrives in new condition ready for installation.

Suited for owners adding factory-style trailer

This harness suits vehicle owners who need a direct, vehicle-specific connection for trailer lights without cutting or splicing factory wiring. It is not for buyers who require a universal splice-in kit, those needing connectors for non-standard trailer pin configurations, or anyone looking for an integrated brake controller module.

Handles standard trailer lighting circuits

The harness manages the typical lighting circuits for brake lights, turn signals and running lights on a compatible trailer or plow setup. It does not supply power for auxiliary battery charging lines, electric brake actuators or reverse-light circuits beyond the standard lighting functions. California Proposition 65 warnings apply to chemicals present in the materials.

How it compares

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

Price $60.99
Pricier than about 65% of the 1,487 comparable items (median $32.99).

Specifications

Product
Brand nameCURT
Product typeTrailer, Plow & Towing Equipment

Questions about this item

What vehicle connector is required for the Curt 56343 harness to plug in?

The harness is a custom-fit design that plugs directly into the factory wiring connector on the specific vehicle it was made for.

Will the 56343 harness work with my existing trailer lights that use standard bulbs?

Yes, it provides standard lighting signals for brake, turn and tail functions compatible with common incandescent trailer lamps.

How can I verify the 56343 harness is functioning correctly after installation?

Connect a trailer and confirm that the vehicle's brake lights, turn signals and running lights activate the corresponding trailer lamps.

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