Hitch Wiring

Trailer Hitch Wiring & Electrical

  • CURT® - T-Connector
    CURT®T-Connector
    72
    # sp111100
    T-Connector by CURT®. 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....
    Creates a safe, reliable connection between your tow vehicle and your trailerTested in-house for safety
    $13.15 - $97.76
  • Tekonsha® - T-One Connector
    Tekonsha®T-One Connector
    7
    # sp24027
    T-One Connector by Tekonsha®. Wire up your tow vehicle and trailer with whatever it takes to get your trailer lights on, the electric brakes slowing down, and the trailer battery charging. From simple wiring connectors, to connectors...
    Plug and Play T-harnesses to connect to vehicle wiringTrailer wiring connectors, for both truck and trailer
    $21.41 - $277.37
  • CURT® - Towed-Vehicle RV Harness
    CURT®Towed-Vehicle RV Harness
    0
    # sp123368
    Towed-Vehicle RV Harness by CURT®. If you're towing your vehicle along for your next RV adventure, Bring It® with CURT! CURT towed-vehicle RV harnesses are the ideal solution to connecting your vehicle's electrical system to your RV...
    Creates a safe, reliable connection between your tow vehicle and your trailerTested in-house for safety
    $56.07 - $119.68
  • CURT® - 5th Wheel and Gooseneck Wiring
    CURT®5th Wheel and Gooseneck Wiring
    1
    # sp157063
    5th Wheel and Gooseneck Wiring by CURT®. There is nothing like the luxury and power that go along with heavy-duty towing. 5th wheel RVs offer a deluxe, home-away-from-home experience unlike any other, while gooseneck trailers possess a...
    Provides an extra connector for plugging in your trailer wiringIncludes a right-angle plug for easy installation
    $72.95 - $826.62
  • CURT® - Factory Harness Adapter
    CURT®Factory Harness Adapter
    0
    # sp228448
    Factory Harness Adapter by CURT®. There are several different types of connectors used to supply power from a tow vehicle's electrical system to a trailer's wiring system. Some trailers only need the bare essentials - running lights,...
    Splices into the vehicle’s wiring to provide a connection for a trailer plugProudly made in Wisconsin, from start to finish
    $21.93 - $52.88
  • Hopkins Towing® - Multi-Tow™ Towing Wiring Kit
    Hopkins Towing®Multi-Tow™ Towing Wiring Kit
    5
    # sp2847
    Multi-Tow™ Towing Wiring Kit by Hopkins Towing®. To have a greater peace of mind when driving with a trailer, go with this perfect accessory that is sure to provide you with a safe, secure connection. Made of sturdy,...
    Provides multiple towing options from one connectorPlug-In Simple No cutting, No splicing - Saves time
    $29.88 - $37.72
  • Husky Towing® - Trailer Brake System Harness
    Husky Towing®Trailer Brake System Harness
    0
    # sp197234
    Trailer Brake System Harness by Husky Towing®. Plug Quantity: 2. With connector. Compatible With Controllers With a Connector; 36 Inch Length; 2 Plug. This top-grade product is expertly made in compliance with stringent industry...
    The Safest Or Easiest Way To Wire A Brake Control To Your Tow-Prepped VehicleSimply Attach The Adapter To The Brake Control
    $3.14 - $21.62
  • Husky Towing® - Trailer Wiring Connector
    Husky Towing®Trailer Wiring Connector
    0
    # sp197235
    Trailer Wiring Connector by Husky Towing®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from...
    Impact And Corrosion ResistantEasy-Pull Grip Design
    $7.30 - $113.99
  • CURT® - Adapter
    CURT®Adapter
    1
    # sp104893
    Adapter by CURT®. There are several different types of connectors used to supply power from a tow vehicle's electrical system to a trailer's wiring system. Some trailers only need the bare essentials - running lights, brake lights and...
    Splices into the vehicle’s wiring to provide a connection for a trailer plugProudly made in Wisconsin, from start to finish
    $15.45 - $28.75
  • CURT® - Trailer Wire Relay Kit
    CURT®Trailer Wire Relay Kit
    0
    # sp210031
    Trailer Wire Relay Kit by CURT®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind, this product by Curt will last a lifetime. It will...
    Splices into the vehicle’s wiring to provide a connection for a trailer plugProudly made in Wisconsin, from start to finish
    $29.42 - $32.37
  • Hopkins Towing® - 5th Wheel Harness
    Hopkins Towing®5th Wheel Harness
    0
    # sp2848
    5th Wheel Harness by Hopkins Towing®. Want to simplify the hookup of your gooseneck or 5th-wheel trailer? Tired of reaching those hard-to-get places while connecting them to your vehicle? Go with this highly reliable part and forget...
    Plug-In Simple! Endurance ™ 7 Blade with reinforced 90° angle installs easily in hard to reach placesPlugs directly into OEM wiring system
    $73.30 - $78.60
  • Hopkins Towing® - Wiring Harnesses
    Hopkins Towing®Wiring Harnesses
    0
    # sp158739
    Wiring Harnesses by Hopkins Towing®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind, this product by Hopkins will last a lifetime. It...
    OEM connectors exactly match a tow vehicleEnsure a perfect, weather-tight fit
    $13.49 - $21.73
  • ACDelco® - GM Original Equipment™ Trailer Brake Continue Relay Assembly
    ACDelco®GM Original Equipment™ Trailer Brake Continue Relay Assembly
    0
    # sp11689
    GM Original Equipment™ Trailer Brake Continue Relay Assembly by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect for your vehicle and...
    Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
    $72.92
  • ACDelco® - Professional™ Inline to Trailer Wiring Harness Connector
    ACDelco®Professional™ Inline to Trailer Wiring Harness Connector
    0
    # sp93923
    Professional™ Inline to Trailer Wiring Harness Connector by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect for your vehicle and...
    Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
    $28.22 - $52.85
  • CURT® - Converters
    CURT®Converters
    3
    # sp210379
    Converters by CURT®. When your vehicle does not readily provide an electrical connection for hooking up your trailer, CURT electrical converts offer the solution. Working tail lights on your trailer are absolutely essential any time you...
    Uses plug-and-play connectors and provides a standard trailer wiring outputTested in-house for safety
    $29.42 - $64.30
  • CURT® - Hitch Wiring
    CURT®Hitch Wiring
    0
    # sp123366
    Hitch Wiring by CURT®. A CURT connector provides a reliable connection for your trailer wiring, using an industry-standard format, such as a 4-way flat, 6-way round or 7-way RV blade. They can be used to install new wiring on a vehicle...
    Splices into the vehicle’s wiring to provide a connection for a trailer plugProudly made in Wisconsin, from start to finish
    $17.49
  • Tekonsha® - Wiring Components
    Tekonsha®Wiring Components
    0
    # sp46949
    Wiring Components by Tekonsha®. This product is made from high-grade materials to meet the strictest standards of high quality. Designed with the utmost care and attention to detail, this Tekonsha product ensures superior reliability....
    No Cutting Or Splicing Vehicle WiringIsolates Trailer Light Operation from Tow Vehicle's Electrical System
    $115.14 - $269.39
  • ACDelco® - GM Original Equipment™ Trailer Tow Harness Connector
    ACDelco®GM Original Equipment™ Trailer Tow Harness Connector
    0
    # sp10415
    GM Original Equipment™ Trailer Tow Harness Connector by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect for your vehicle and...
    Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
    $33.35 - $149.58
  • Blue Ox® - EZ Light Wiring Harness
    Blue Ox®EZ Light Wiring Harness
    0
    # sp237274
    EZ Light Wiring Harness by Blue Ox®. The EZ Light wiring harness allows you to connect your trailer to your vehicle’s electrical system in as little as 15 minutes. The EZ Light kit connects to the towed vehicle’s wiring to provide...
    Expertly crafted from premium materialsDesigned to match rigorous quality standards
    $116.99 - $122.94
  • Blue Ox® - Fuse Bypass
    Blue Ox®Fuse Bypass
    0
    # sp27386
    Fuse Bypass by Blue Ox®. This superior fuse bypass switch provides a safe alternative to the constant removal and reinstallation of the fuse when changing from the towed mode to the driving mode. Once installed, it allows to disconnect...
    Disconnects your vehicle's fuse with the flip to prep your vehicle to be towedBypasses towed car's fuse to tow without draining battery
    $48.14 - $183.60
  • Blue Ox® - Wiring Harness
    Blue Ox®Wiring Harness
    0
    # sp111301
    Wiring Harness by Blue Ox®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind, this product by Hooker will last a lifetime. It will meet...
    Designed to safely and efficiently haul your loadsMade from the highest quality materials
    $116.99 - $133.37
  • Smittybilt® - Hitch Wiring
    Smittybilt®Hitch Wiring
    0
    # sp210836
    Hitch Wiring by Smittybilt®. Going on a trip and want to take your Jeep along? This Adjustable Tow Bar Kit makes it easy to tow your Jeep behind a truck or motor home. It has a 5000 lb. GVW capacity and fits any standard 2" ball. It...
    Enables a Jeep to be towed behind a truck or motor home5000 lb GVW capacity
    $36.99
  • DIY Solutions® - Trailer Hitch
    DIY Solutions®Trailer Hitch
    0
    # sp254169
    Trailer Hitch by DIY Solutions®. If you're seeking to get your steel stallion back to its tip-top condition, then this top-notch replacement solution is what you should definitely look out for. When it comes to quality, reliability and...
    Designed to help restore your vehicle to its former gloryQuick replacement to let you enjoy an awesome ride again
    $176.13 - $813.38
  • DIY Solutions® - Trailer Wiring Harness
    DIY Solutions®Trailer Wiring Harness
    0
    # sp246067
    Trailer Wiring Harness by DIY Solutions®. If you're seeking to get your steel stallion back to its tip-top condition, then this top-notch replacement solution is what you should definitely look out for. When it comes to quality,...
    Designed to help restore your vehicle to its former gloryQuick replacement to let you enjoy an awesome ride again
    $34.38 - $308.96
  • Dorman® - 12V Accessory Power Outlet Cover
    Dorman®12V Accessory Power Outlet Cover
    0
    # sp58622
    12V Accessory Power Outlet Cover by Dorman®. Dorman has all the components needed for a complete repair. Quickly and easily installed, it eliminates the clunking noise that may result when this part fails, while restoring original ride...
    Universal replacement ensures a proper fit every timeFully threaded body for easy installation in many unique applications
    $12.62
  • Dorman® - Trailer Hitch Electrical Connector Plugs
    Dorman®Trailer Hitch Electrical Connector Plugs
    1
    # sp25447
    Trailer Hitch Electrical Connector Plugs by Dorman®. Restore the brake lights and turn signal on your trailer to proper operation with Dorman's Trailer Hitch Plug. The Plug is constructed from durable materials to protect the wiring...
    Hitch Plug cap flips over to prevent corrosion and other damageDirect replacement for a proper fit
    $25.98 - $27.14
  • Standard® - Intermotor™ Trailer Connector Kit
    Standard®Intermotor™ Trailer Connector Kit
    0
    # sp223699
    Intermotor™ Trailer Connector Kit by Standard®. Standard is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices and the highest reputation for integrity to...
    Premium parts you can rely onDesigned to restore functionality
    $15.23 - $159.00
  • Standard® - Trailer Connector Kit
    Standard®Trailer Connector Kit
    0
    # sp27905
    Trailer Connector Kit by Standard®. SMP's vision is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices and the highest reputation for integrity to all...
    OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
    $9.60 - $204.28
  • Tow Ready® - 5th Wheel Harness
    Tow Ready®5th Wheel Harness
    0
    # sp927
    5th Wheel Harness by Tow Ready®. Wire up your tow vehicle and trailer with whatever it takes to get your trailer lights on, the electric brakes slowing down, and the trailer battery charging. From simple wiring connectors, to connectors...
    Plug and Play T-harnesses to connect to vehicle wiringTrailer wiring connectors, for both truck and trailer
    $118.19 - $148.06
  • Hopkins Towing® - 12-Volt Power Socket
    Hopkins Towing®12-Volt Power Socket
    7
    # 267977260
    Universal 12-Volt Power Socket by Hopkins Towing®. When attaching a trailer to your vehicle, a premium quality wiring kit or harness is a vital necessity. An automotive trailer must have a reliable connection with the signaling system...
    Splice onto tow vehicle's wiring systemCorrosion resistant terminals
    $15.06 - $23.14




So, you’ve got your trailer connected to your truck with the right hitch, ball mount and trailer ball. You’re ready to go, but what about your trailer lights? If the trailer connector doesn’t match the one on your tow vehicle, or if the vehicle doesn’t even have a plug, stick around. From basic exterior lights to 12-volt powered accessories, all trailers need electric power supplied by your vehicle, and we have everything needed to make a hassle-free connection including extensions, connectors, harnesses and adapters.

There are a number of standardized trailer connectors, such as 4-pin flat/round, 5-pin flat, 6-pin square/round, and 7-pin round. The simplest 4-pin system is used for small trailers, and has one ground pin, one pin each for left and right turn signals and brake lights, and one for the running lights. 5-pin flat connectors add a wire for the back-up lights. If the trailer is equipped with surge brakes, this circuit also disengages the brakes when the vehicle is backing up.

In addition to connections for turn signals, brake lights, tail lights and ground, 6-pin connectors have one terminal each for electric brakes and 12-volt accessories. 6-pin connectors come in square and round styles and are common to gooseneck and 5th wheel trailers, boat trailers and campers. 7-pin connectors are most commonly found on new vehicles that are prewired for towing. Along with the same functions as a 6-pin connector, this connector has a 7th circuit that is for the back-up lights. 7-pin connectors come with round or RV blade-style pins. Fortunately, no matter what connector you have on your trailer, we have the wiring harnesses that will let you plug into your vehicle’s electrical system.

The first thing you have to determine is whether your vehicle has a factory installed trailer towing package. If it does, you’ll find an electrical connector at the rear of the vehicle, usually on or near the bumper. If the shape and number of pins (wires) on the vehicle connector matches the one on your trailer, then all you’ll need is a wiring harness of sufficient length with the same connector at each end. If not, we can supply you with a plug-and-play adapter harness that will make all your trailer electrical functions work, without any cutting and splicing. For example, if your truck has a 7-pin round connector but your trailer has a 4-pin flat connector, one of our adapter harnesses will have you connected in minutes.

But don’t worry if your vehicle isn’t already set up for towing, we can still get you connected without much hassle. For most vehicles we offer a plug-and-play T-shaped harness (so called because it connects to both of your tail lights) that connects your vehicle lights to the trailer lights. If you have an obscure vehicle for which no T-shaped harness is available, we can still help, but some splicing will be necessary. And if your vehicle uses separate bulbs for the brake lights and turn signals but your trailer uses one bulb for both, we can supply you with a converter harness that will make the connection simple. We also have a large assortment of brackets, connectors, sockets, and anything else you need to get connected.

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Electrical & Wiring Reviews

279 reviews
4 of 5
Easy to install
CURT® - T-Connector
This is replacing one that I installed about 5 years ago and quit working. I wish it would have lasted longer but the fact that it is plug and play made the replacement not so difficult.
Posted by Customer / June 03, 20212016 Kia Sedona
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