Jetuplusllc 7-Way Trailer Tow Harness Kit – USCAR-Style 7-Blade + 4-Pin, Weather-Sealed with Brass Terminals

Jetuplusllc's 7 Way Trailer Tow Hitch Connector Receptacle Harness Installation Kit provides a factory-style, weather-sealed 7-way and 4-pin wiring solution to power lights, brakes, auxiliary battery, and ground for trailers.

This complete wiring installation kit is designed as a custom-fit replacement for vehicles equipped with USCAR-style tow harnesses. It combines a 7-blade and 4-flat connector in one compact assembly, uses color-coded wiring for straightforward hookups, and mounts neatly to a universal bumper bracket. Corrosion-resistant brass terminals and a weather seal on the receptacle help maintain reliable electrical contact in wet or salty conditions.

How does this kit connect to my vehicle and trailer?

The harness taps into an existing USCAR plug or factory tow harness and routes the circuits to the supplied 7-way blade and 4-pin flat receptacles. Color-coded wires match standard trailer wiring functions so you can identify and connect each circuit quickly.

• Plugs into USCAR-style factory tow harness for a near OEM fit.
• Provides dedicated circuits for tail, turn, stop, reverse, battery, and brake lines.
• Includes ground lead and sealed receptacle for secure connection.
• Universal bracket mounts to most rear bumpers for tidy installation.

What electrical functions are supported by the 7-way and 4-pin connectors?

The combined 7-way (blade) and 4-pin (flat) connectors supply the full range of basic towing circuits plus an auxiliary power feed. Use the 7-way for electric trailer brakes and auxiliary battery power, and the 4-pin for standard lighting when needed.

• 7-way supplies brake controller output, auxiliary battery, reverse, and ground.
• 4-pin flat covers stop, tail, and turn signal lighting circuits.
• Color-coded leads correspond to typical trailer wiring conventions for troubleshooting.
• Brass terminals improve conductivity and resist corrosion over time.

Is installation difficult and what hardware is included?

Installation is designed to be straightforward for technicians and DIYers familiar with trailer wiring. The kit uses a universal bumper-mounted bracket so you won't need custom fabrication; typical installations require basic hand tools and standard wiring connectors or soldering supplies.

• Universal bracket included for rear bumper mounting; hardware compatibility with most trucks.
• Pre-wired color-coded harness reduces guesswork during hookup.
• Weather-sealed receptacle and brass terminals minimize future maintenance.
• May require crimp connectors, heat shrink, or dielectric grease for long-life joints.

Will this harness fit my vehicle make and tow package?

The harness is built as a universal multi-tow solution intended to work with Chevrolet/GM, Toyota, Ford, and Dodge vehicles that have a compatible tow harness or USCAR-style plug. Always verify your vehicle's connector type and wiring layout before purchase.

• Custom-fit replacement for vehicles using USCAR tow harnesses.
• Compatible with common GM, Ford, Toyota, and Dodge tow configurations.
• Check vehicle wiring diagrams or factory plug shape to confirm match.
• Professional installation recommended if vehicle wiring requires splicing or modifications.

Who this is for: This Jetuplusllc harness installation kit is aimed at vehicle owners, fleet technicians, and trailer haulers who need a durable, weather-resistant, and nearly factory-style towing connector. It's ideal for drivers upgrading or replacing worn trailer connectors, adding a multi-function tow receptacle to a truck, or converting between 7-way and 4-pin trailer standards while keeping wiring tidy and secure.