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CARROFIX OE trailer brake harness with 7 pin connector and 4 pin male plug

CARROFIX

CARROFIX OE 5L3Z13A576BA Trailer Brake Control Harness 7 Pin Connector exterior accessory

SKU CH-HCBK-W6D52

Plug-and-play 7-way trailer brake harness replaces the 4-pin connector on 2005-2008 Ford F-150 and 2006-2008 Lincoln Mark LT models

  • Type7 WAY TRAILER CONNECTOR
  • Direct OEM replacement restores factory trailer-brake performance
  • Plug-and-play design upgrades 4-pin to 7-way connector in minutes
  • Fits 2005-2008 Ford F-150 and 2006-2008 Lincoln Mark LT models
  • No vehicle modifications or special tools required for installation
  • Includes 4-pin male plug, 7-way tow plug, OE connector and ground wire

Direct OEM Replacement Harness

This CARROFIX wiring assembly replaces the factory trailer brake control harness on 2005-2008 Ford F-150 and 2006-2008 Lincoln Mark LT models. It is a new OEM part designed to restore original equipment performance for vehicles equipped with a factory tow package.

Plug-and-Play 7-Way Connector

The harness converts the existing 4-pin connection to a 7-way trailer plug without modifications. Installation uses the OE connector and included ground wire, requiring no special tools or wiring changes to the vehicle.

Restores Factory Towing Function

This assembly provides the correct 7-way interface for trailer brake control and lighting circuits on compatible trucks. It does not add towing capability to vehicles that lack the factory tow package or the necessary vehicle-side wiring.

Highlights

  • Direct OEM replacement restores factory trailer-brake performance
  • Plug-and-play design upgrades 4-pin to 7-way connector in minutes
  • Fits 2005-2008 Ford F-150 and 2006-2008 Lincoln Mark LT models
  • No vehicle modifications or special tools required for installation
  • Includes 4-pin male plug, 7-way tow plug, OE connector and ground wire

Specifications

Type7 WAY TRAILER CONNECTOR

Questions about this item

Will the 7-way trailer connector need any periodic maintenance or replacement after installation?

The harness is a direct OEM replacement designed to restore factory tow-package performance; no service interval is required beyond routine visual inspection of the connector pins and ground wire for corrosion or damage.

What is the first limitation that appears when the harness is used continuously for heavy trailer braking?

The 7-way connector and ground wire are rated for the factory tow-package current draw, so the limiting factor is the vehicle's own brake-controller and fuse capacity rather than the harness itself.

Does the harness generate noticeable heat or electrical noise during all-day towing?

The plug-and-play design adds no active electronics, so it produces no audible noise and only negligible resistive heat under normal factory-rated loads.

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