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CURT Custom Wiring Connector #55251

Class: Wiring UPC: 612314552511

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MSRP $13.59

  • Plugs into existing OEM vehicle socket to provide a 4-way flat socket
  • Simple plug-and-play design eliminates the need for cutting or splicing
  • 4-way flat output connects tail lights, brake lights and turn signals
  • Dust cover included to keep connector clean when not in use
  • Backed by a limited one-year warranty
  • Made in USA


  • OE replacement 4-flat
Instruction Sheet Download pdf
Warranty One Year Limited
Side Application Type Description Blank
Part Type Custom Wiring Connector
T-Connector Location S7
Shipping Weight 0.375
Finish Blank
Mount Type Description Blank
Electrical System Type 2W
Output Type 4-Way Flat
UPC 612314552511

Additional Information

A CURT custom wiring connector (sometimes called a T-connector) is a simple, plug-and-play electrical device that eliminates the need for cutting, splicing and soldering when installing vehicle-to-trailer wiring.

Most vehicles do not come ready to tow. Unless your vehicle has a towing package, it is probably not equipped with a trailer wiring connector. This is where CURT's custom wiring connectors come into play. A custom wiring connector uses a single original equipment plug to plug into a special socket provided by your vehicle. Though this option is not available on every vehicle, some automotive manufacturers design their vehicles to be easily equipped for towing by supplying a socket, integrated into the vehicle's electrical system, to readily accept a custom wiring connector. With a CURT custom wiring connector, there is no need to tap into the taillight assembly because a special socket is already provided.

This custom wiring connector provides a 4-way flat connector socket and is designed to be a custom wiring option for certain years of the Ford Explorer 4-door (fits beneath OE 1.25" receiver), Mercury Mountaineer or Lincoln Aviator (to verify your vehicle compatibility, see the CURT application guide at CURT custom wiring connectors are designed to be long-lasting and simple to install. They come with dust covers to keep your connector clean when not in use and feature a one-year limited warranty to give you peace of mind.


Year Make Model Style Install Time Other Hitches
2004 Ford Explorer XLS Sport
2002 Ford Explorer XLT
2002 Ford Explorer EDDIE BAUER
2003 Ford Explorer Postal
2004 Ford Explorer XLT
2003 Mercury Mountaineer Base
2003 Ford Explorer SPORT XLT
2004 Ford Explorer XLS
2004 Ford Explorer XLT Sport
2004 Lincoln Navigator Base
2003 Ford Explorer Limited
2002 Ford Explorer XLS
2003 Ford Explorer XLS
2005 Ford Explorer XLS
2005 Ford Explorer Limited
2003 Ford Explorer XLT
2005 Ford Explorer XLT
2002 Mercury Mountaineer Base
2004 Mercury Mountaineer Base
2005 Mercury Mountaineer Premier
2004 Ford Explorer EDDIE BAUER
2005 Ford Explorer EDDIE BAUER
2002 Ford Explorer Limited
2005 Ford Explorer XLS Sport
2005 Ford Explorer XLT Sport
2005 Lincoln Navigator Base
2005 Mercury Mountaineer Base
2004 Mercury Mountaineer Premier
2002 Ford Explorer Sport
2003 Ford Explorer EDDIE BAUER
2004 Ford Explorer Limited
2004 Ford Explorer NBX
2002 Ford Explorer Postal
2003 Ford Explorer SPORT XLS
2003 Lincoln Navigator Base
Page 1 of 4 35 Total Vehicles


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