Home > Trailer & RV Wiring > Tow Wiring Harnesses >

Curt 56172 T-Connector Wiring Harness for 2011-2014 Ford Explorer - 4-Pin Flat

CURT 56172 T-connector trailer wiring harness for 2011-2014 Ford Explorer, 4-pin flat plug, no-splice installation
 
Alternative Views:


: $48.37
Part Number: 56172
Manufacturer: Curt MFG

Quantity in Stock :128

Availability: In Stock
Qty:

 
CURT Manufacturing4-Pin Flat2011-2014 Ford ExplorerCURT 56172 T-Connector Trailer Wiring Harness -- 2011-2014 Ford Explorer

Add trailer lighting capability to your 2011-2014 Ford Explorer the right way -- no wire cutting, no splicing, no guesswork. The CURT 56172 T-connector integrates directly with the Explorer's factory tail light wiring harness using a plug-and-play connector, delivering clean 4-pin flat trailer wiring in about 30 minutes or less.

Plug-and-Play Trailer Wiring Built for the Ford Explorer

The CURT 56172 is part of CURT's T-connector family -- a line of vehicle-specific trailer wiring harnesses designed to integrate seamlessly with a vehicle's existing electrical system. Unlike universal splice-in kits, the 56172 uses OEM-style connectors that tap directly into the factory tail light plugs on the 2011-2014 Ford Explorer, preserving your factory wiring integrity and keeping your warranty intact.

The harness outputs a standard 4-pin flat connector, which is the most common trailer plug format used by boat trailers, utility trailers, enclosed cargo trailers, small campers, and pop-up tent trailers. If your trailer has a 4-pin flat plug, this harness is the correct solution for your Explorer.

No-Splice Installation

Plugs directly into the Explorer's factory tail light connectors. No wire cutting or splicing required -- preserves OEM wiring integrity.

4-Pin Flat Output

Delivers standard 4-pin flat connector output for left turn/brake, right turn/brake, tail lights, and ground -- the universal standard for light-duty trailers.

Vehicle-Specific Fit

Engineered specifically for 2011-2014 Ford Explorer models. No adapter needed, no modification to factory harness connectors.

Protective Circuitry

Built-in circuit protection helps prevent damage to the Explorer's sensitive electronics from trailer wiring faults or short circuits.

What Is a T-Connector?

A T-connector harness is a vehicle-specific wiring solution that plugs in between the vehicle's factory tail light connectors and the existing bulb sockets. The "T" design means the factory circuit continues to function normally (powering your vehicle's own tail lights), while simultaneously sending the correct signals to the trailer connector output. You get trailer wiring without touching a single factory wire.

No Coding or Programming Required: Unlike some towed vehicle systems, this T-connector harness requires no computer programming, no bypass relays for electronics, and no trips to the dealer. Plug in, route the 4-pin connector to your hitch area, and you're done.

Signals Provided

  • Left turn signal and brake light
  • Right turn signal and brake light
  • Tail lights (running lights)
  • Ground

This is a 4-wire system -- it does not provide a 12V auxiliary power pin or a brake controller output wire. If you need those functions, you would need to step up to a 5-pin or 7-pin connector system with a separate brake controller.

What Trailers Use 4-Pin Flat? Boat trailers, jet ski trailers, utility trailers, small cargo trailers, pop-up campers, and lightweight travel trailers commonly use 4-pin flat connectors. If your trailer has a round 4-pin or 7-pin connector, you may need an adapter at the trailer end -- the vehicle-side harness remains the same.

Installation Overview

Installation on the 2011-2014 Ford Explorer is straightforward and typically takes 30-60 minutes with basic hand tools:

  • Access the factory tail light assemblies (usually by removing the cargo area side trim panels or accessing through the liftgate area)
  • Unplug the factory harness connectors from the tail light assemblies
  • Plug the T-connector in line between the factory connectors and the tail lights
  • Route the 4-pin flat output plug down to the hitch receiver area
  • Secure wiring away from heat sources and moving parts
Routing Tip: Use the existing wire routing channels along the Explorer's cargo floor to keep the trailer connector lead hidden and protected. Leave enough slack at the hitch end so the connector can reach trailers without stretching.
Confirm Your Trim Level: The 2011-2014 Ford Explorer used consistent tail light connector formats across most trim levels (Base, XLT, Limited, Sport), but verify your specific vehicle's connector style matches the CURT 56172 before purchase. CURT's online vehicle fit guide by UPC 612314561728 or part number 56172 can confirm fitment for your VIN.

Fitment Information

Compatible Vehicles2011, 2012, 2013, 2014 Ford Explorer (all trims)
Manufacturer Part Number56172
UPC612314561728
BrandCURT Manufacturing

Connector Specifications

Connector Type4-Pin Flat (trailer side output)
Vehicle-Side ConnectionOEM-style plug-in connectors, no splicing
Wiring SignalsLeft turn/brake, right turn/brake, tail, ground
Brake Controller OutputNot included (4-pin only)
Auxiliary Power PinNot included (4-pin only)

Physical Specifications

Package Weight0.59 lbs
Package Dimensions9.0 in x 6.0 in x 3.0 in

Compatibility and Series Notes

CURT Product FamilyT-Connector Vehicle Wiring Harnesses
Installation TypePlug-and-play, no splicing
Typical Install Time30-60 minutes
Tools RequiredBasic hand tools, panel removal tool recommended

What Is Included

In the BoxT-connector wiring harness with vehicle-side plugs and 4-pin flat trailer connector
Mounting HardwareTypically includes wire ties and/or mounting clips for securing harness
InstructionsVehicle-specific installation instructions included

What Is NOT Included

Trailer Ball MountNot included -- sold separately
Hitch ReceiverNot included -- requires compatible Class II or Class III receiver hitch
Brake Controller WiringNot included -- 4-pin flat does not support electric brakes
7-Pin AdapterNot included -- available separately if trailer uses 7-pin round
Important Information -- Read Before Installing
  • This harness is designed specifically for 2011-2014 Ford Explorer. Do not attempt to use on other Ford models or model years -- connector configurations differ.
  • The 4-pin flat connector supports running lights, turn signals, and brake lights only. It does NOT support electric trailer brakes -- a 7-pin system with a brake controller is required for trailers with electric brakes.
  • Do not exceed the current load rating of the factory tail light circuits. Adding LED trailer lighting is recommended to minimize draw on vehicle circuits.
  • Inspect all connections for corrosion or looseness seasonally, especially if the vehicle is used in wet or road-salt environments.
  • Ensure the 4-pin connector is properly capped or covered when not towing to prevent moisture intrusion and corrosion at the connector pins.
  • A functioning hitch receiver must already be installed on the vehicle -- this harness provides wiring only and does not include any structural towing hardware.


Browse for more RV Accessories in the same category as this item:

Trailer & RV Wiring > Tow Wiring Harnesses
Trailer & RV Wiring


$46.49