ROOTMUTIFY Trailer Brake Harness 7-Pin Round & 4-Pin Flat — Ford 2009–2023 Direct-Fit, Corrosion-Resistant

ROOTMUTIFY Trailer Brake Harness Towing 7-Pin Round / 4-Pin Flat Plug Connector is a direct-fit replacement for Ford trailer tow harness connectors designed to restore trailer lighting and braking circuits on compatible 2009–2023 Ford trucks and vans.

This heavy-duty replacement harness replicates the factory 4/7-pin trailer connector layout so you can reconnect trailer lights, ground and auxiliary power quickly. Built from corrosion-resistant plastics and brass contacts, the unit installs at the vehicle rear and is supplied with necessary mounting accessories. It matches multiple OEM part numbers and fits a wide range of Ford and Lincoln models, making it a practical repair for worn or damaged factory connectors.

Which Ford models and part numbers does this harness replace?

The ROOTMUTIFY harness is engineered to match factory connectors used across many Ford and Lincoln trucks, vans and SUVs. It lists cross-reference OEM numbers so you can confirm fitment before purchase.

• Compatible models: 2009–2019 E-150/E-250/E-350/E-450, 2009–2019 F-150, 2009–2016 F-250/F-350/F-450/F-550 Super Duty, 2015–2019 Transit 150/250/350 and 2015–2023 Transit-350HD, 2018–2019 Expedition, 2010–2014 Lincoln Mark LT, 2018–2019 Lincoln Navigator.
• OEM cross-references: 9U5Z-14489-MAA, FU5Z-14489-A, 68014986AB, 68573359AA and others listed.
• Fits rear mounting location where factory tow connector resides.

How does the 7-pin round and 4-pin flat arrangement work for towing?

This connector combines the two most common trailer plug types so you can support basic lighting plus RV-style functions when needed. The 4-pin flat handles stop/turn/tail and ground; the 7-pin round adds reverse/aux power and an electronic brake signal for compatible trailers.

• 4-pin flat: tail, left/right turn, brake lights and ground.
• 7-pin round: adds brake controller input, auxiliary power and reverse/backup circuit.
• Designed to mate with standard trailer plugs for quick hitch-up.

What materials and durability features protect this harness from the elements?

ROOTMUTIFY uses durable plastics and brass contacts to resist wear, moisture and corrosion common at rear bumper mount points. The connector housing and contact plating extend service life compared with untreated alternatives.

• Brass contacts for improved conductivity and corrosion resistance.
• Weather-resistant plastic housing reduces moisture intrusion.
• Includes mounting bracket and accessories for secure attachment.

How easy is installation and what’s included in the package?

Installation is straightforward for anyone comfortable with basic vehicle electrical connections: unplug the old connector, match wire colors or plug pattern, and secure the new assembly to the factory mounting point. The product ships with the connector and related accessories so you have the parts needed for a direct replacement.

• Package contents: 1 x 7-pin round / 4-pin flat trailer connector plus mounting accessories.
• Direct-fit design for the listed Ford/Lincoln models—no cutting or splicing when OEM match confirmed.
• Recommended tools: basic hand tools and electrical cleaner for connector contacts.

Who this is for: drivers who tow trailers, campers, horse trailers or utility trailers with compatible Ford or Lincoln vehicles and need a reliable, factory-style replacement connector. It suits fleet maintenance, DIY mechanics and anyone restoring trailer lighting and brake circuits after wear, corrosion or accidental damage. Confirm your vehicle year and OEM part number against the cross-reference list before ordering to ensure a correct fit.