Trailer Hitch Wiring & Electrical

Hitch Wiring
  • Truck-Lite® - 88 Series Identification Wiring Harness
    Truck-Lite®88 Series Identification Wiring Harness
    0
    # 88831117
    Universal 88 Series Identification Wiring Harness by Truck-Lite®. 14 Gauge. 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...
    High quality at an affordable priceExpertly made from premium materials
    $23.58 - $68.43
  • Truck-Lite® - 88 Series Main Cable Wiring Harness
    Truck-Lite®88 Series Main Cable Wiring Harness
    0
    # 88831107
    Universal 88 Series Main Cable Wiring Harness by Truck-Lite®. 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 Truck-Lite product...
    High quality at an affordable priceExpertly made from premium materials
    $52.01 - $328.50
  • Truck-Lite® - 88 Series Marker Clearance Wiring Harness
    Truck-Lite®88 Series Marker Clearance Wiring Harness
    0
    # 96917070
    Universal 88 Series Marker Clearance Wiring Harness by Truck-Lite®. 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 Truck-Lite...
    High quality at an affordable priceExpertly made from premium materials
    $13.15 - $30.26
  • Truck-Lite® - Identification Wiring Harness
    Truck-Lite®Identification Wiring Harness
    0
    # 96922268
    Universal Identification Wiring Harness by Truck-Lite®. 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 Truck-Lite product...
    $13.87 - $28.27
  • Truck-Lite® - Marker Clearance Wiring Harness
    Truck-Lite®Marker Clearance Wiring Harness
    0
    # 96922714
    Universal Marker Clearance Wiring Harness by Truck-Lite®. 14 Gauge. 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 Truck-Lite...
    Dimensions ''A'' indicate standard stocked length harnessCustom length available in 12'' increments.
    $6.62 - $22.34
  • Truck-Lite® - Marker Clearance and Identification Wiring Harness
    Truck-Lite®Marker Clearance and Identification Wiring Harness
    0
    # 96911669
    Universal Marker Clearance and Identification Wiring Harness by Truck-Lite®. 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...
    $12.41 - $19.39
  • Truck-Lite® - Signal-Stat 1 Plug Connector
    Truck-Lite®Signal-Stat 1 Plug Connector
    0
    # 88831199
    Universal Signal-Stat 1 Plug Connector by Truck-Lite®. 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 Truck-Lite product...
    Expertly crafted from superior materialsProvides exceptional reliability
    $13.53 - $19.71
  • Truck-Lite® - Super 50 Conductor Compression Fitting
    Truck-Lite®Super 50 Conductor Compression Fitting
    0
    # 96911706
    Universal Super 50 Conductor Compression Fitting by Truck-Lite®. 3-part fitting consisting of a pre-tapped cap, threaded base and black PVC grommet that is available with 6 different hole sizes to accommodate various conductor cables....
    Expertly crafted from superior materialsProvides exceptional reliability
    $7.25 - $9.31
  • WVE® - 4-Pole Flat Connector
    WVE®4-Pole Flat Connector
    0
    # 4505946148
    Universal 4-Pole Flat Connector by WVE®. 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...
    Designed to keep your vehicle running reliably mile after mileMade from superior materials for excellent durability
    $25.02 - $39.23
  • WVE® - 6-Pole Trailer Hitch Wiring
    WVE®6-Pole Trailer Hitch Wiring
    0
    # 4505946176
    Universal 6-Pole Trailer Hitch Wiring by WVE®. 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...
    Designed to keep your vehicle running reliably mile after mileMade from superior materials for excellent durability
    $9.00 - $120.37
  • WVE® - 7-Pin Adapter
    WVE®7-Pin Adapter
    0
    # 4505948197
    Universal 7-Pin Adapter by WVE®. 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 industry-leading...
    Designed to keep your vehicle running reliably mile after mileMade from superior materials for excellent durability
    $21.82 - $68.94
  • WVE® - 7-Pole Connector
    WVE®7-Pole Connector
    0
    # 4505947119
    Universal 7-Pole Connector by WVE®. 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 industry-leading...
    Designed to keep your vehicle running reliably mile after mileMade from superior materials for excellent durability
    $23.34 - $26.53
  • WVE® - 7-Pole Trailer Connector Plug
    WVE®7-Pole Trailer Connector Plug
    0
    # 4505945170
    Universal 7-Pole Trailer Connector Plug by WVE®. 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...
    Designed to keep your vehicle running reliably mile after mileMade from superior materials for excellent durability
    $16.16 - $31.33
  • WVE® - 7-Pole Trailer Hitch Wiring
    WVE®7-Pole Trailer Hitch Wiring
    0
    # 4505946133
    Universal 7-Pole Trailer Hitch Wiring by WVE®. 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...
    Designed to keep your vehicle running reliably mile after mileMade from superior materials for excellent durability
    $15.95 - $137.02
  • Tekonsha® - ModuLite™ HD Protector
    Tekonsha®ModuLite™ HD Protector
    0
    # 3868837671
    Universal ModuLite™ HD Protector by Tekonsha®. One-year warranty. T-One Connectors require no splicing of vehicle wires. Simply locate your vehicles wiring harness connector, unplug the connection and insert the T-One Connector into...
    Plug and Play T-harnesses to connect to vehicle wiringTrailer wiring connectors, for both truck and trailer
    $68.12 - $116.67
  • Tekonsha® - Tail Light Converter
    Tekonsha®Tail Light Converter
    0
    # 3868848479
    Universal Tail Light Converter by Tekonsha®. One-year warranty. T-One Connectors require no splicing of vehicle wires. Simply locate your vehicles wiring harness connector, unplug the connection and insert the T-One Connector into the...
    Plug and Play T-harnesses to connect to vehicle wiringTrailer wiring connectors, for both truck and trailer
    $45.52 - $49.54
  • Blue Ox® - Connector Kit
    Blue Ox®Connector Kit
    0
    # 4312595251
    Universal Connector Kit 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...
    Expertly crafted from premium materialsDesigned to match rigorous quality standards
    $12.62 - $17.19
  • Cole Hersee® - 3-Pole Flat Trailer Connector
    Cole Hersee®3-Pole Flat Trailer Connector
    0
    # 5174833717
    Universal 3-Pole Flat Trailer Connector by Cole Hersee®. Designed with precision and functionality in mind, this accessory ensures outstanding performance and easy use which makes it the perfect deal for your ultimate satisfaction. This...
    High quality at an affordable priceExpertly made from premium materials
    $7.16 - $12.26
  • Cole Hersee® - 4-Pole Plug Trailer Connector
    Cole Hersee®4-Pole Plug Trailer Connector
    0
    # 5174833720
    Universal 4-Pole Plug Trailer Connector by Cole Hersee®. Designed with precision and functionality in mind, this accessory ensures outstanding performance and easy use which makes it the perfect deal for your ultimate satisfaction. This...
    High quality at an affordable priceExpertly made from premium materials
    $12.07 - $12.27
  • Cole Hersee® - 7-Pole Plug Trailer Connector and Socket Trailer Connector
    Cole Hersee®7-Pole Plug Trailer Connector and Socket Trailer Connector
    0
    # 5174829717
    Universal 7-Pole Plug Trailer Connector and Socket Trailer Connector by Cole Hersee®. Designed with precision and functionality in mind, this accessory ensures outstanding performance and easy use which makes it the perfect deal for...
    High quality at an affordable priceExpertly made from premium materials
    $28.50 - $45.48
  • Cole Hersee® - Trailer Connector
    Cole Hersee®Trailer Connector
    0
    # 4415729906
    Universal Trailer Connector by Cole Hersee®. Designed with precision and functionality in mind, this accessory ensures outstanding performance and easy use which makes it the perfect deal for your ultimate satisfaction. This is an...
    High quality at an affordable priceExpertly made from premium materials
    $9.29 - $67.21
  • Pollak® - 6-Way Connector Plug
    Pollak®6-Way Connector Plug
    0
    # 96914695
    6-Way Connector Plug by Pollak®. 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 Pollak will last a lifetime. It will...
    Expertly crafted from premium materialsDesigned to match rigorous quality standards
    $9.01 - $15.53
  • Pollak® - Cycling Automatic Reset
    Pollak®Cycling Automatic Reset
    0
    # 96920709
    Cycling Automatic Reset by Pollak®. 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 Pollak will last a lifetime. It...
    Expertly crafted from premium materialsDesigned to match rigorous quality standards
    $4.20 - $14.05
  • RealWheels® - 5-Way Female Weatherpack Connector
    RealWheels®5-Way Female Weatherpack Connector
    0
    # 5913527293
    Universal 5-Way Female Weatherpack Connector by RealWheels®. Designed with attention to every detail and manufactured from top-quality materials, this product will provide consistent performance over its entire lifespan. It is made by...
    Made from high-grade materials for a long lifespanBuilt to meet or exceed industry standards
    $3.33 - $16.30
  • CURT® - 20" USCAR Wiring Extension Harness (USCAR to USCAR)
    CURT®20" USCAR Wiring Extension Harness (USCAR to USCAR) (56475)
    0
    # mpn4934313171
    20" USCAR Wiring Extension Harness (USCAR to USCAR) 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...
    Creates a safe, reliable connection between your tow vehicle and your trailerTested in-house for safety
    $25.84
  • CURT® - 4-Way Flat and 6-Way Round Custom Wiring Connector
    CURT®4-Way Flat and 6-Way Round Custom Wiring Connector (55664)
    0
    # mpn4553773528
    4-Way Flat and 6-Way Round Custom Wiring Connector (55664) by CURT®. Output Type: 4-Way Flat. A CURT custom wiring connector (sometimes called a T-connector) is a simple, plug-and-play electrical device that eliminates the need for...
    Creates a safe, reliable connection between your tow vehicle and your trailerTested in-house for safety
    $28.69
  • CURT® - 4-Way Flat and 7-Way Round Custom Wiring Connector
    CURT®4-Way Flat and 7-Way Round Custom Wiring Connector (55774)
    0
    # mpn4553773460
    4-Way Flat and 7-Way Round Custom Wiring Connector (55774) by CURT®. Output Type: 4-Way Flat. A CURT custom wiring connector (sometimes called a T-connector) is a simple, plug-and-play electrical device that eliminates the need for...
    Creates a safe, reliable connection between your tow vehicle and your trailerTested in-house for safety
    $29.43
  • CURT® - Replacement Plug for USCAR Socket
    CURT®Replacement Plug for USCAR Socket (56229)
    0
    # mpn4553773461
    Replacement Plug for USCAR Socket (56229) by CURT®. 7-Way Vehicle End with 24" Bonded Wire. Material: Plastic. A CURT custom wiring connector (sometimes called a T-connector) is a simple, plug-and-play electrical device that eliminates...
    Creates a safe, reliable connection between your tow vehicle and your trailerTested in-house for safety
    $17.61
  • CURT® - T-Connector
    CURT®T-Connector (56522)
    0
    # mpn5097035938
    T-Connector by CURT®. 4-wire System, Location: S5. 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...
    Creates a safe, reliable connection between your tow vehicle and your trailerTested in-house for safety
    $85.87
  • CURT® - T-Connector
    CURT®T-Connector (56529)
    0
    # mpn5097035920
    T-Connector by CURT®. 4-wire System, Location: S5. 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...
    Creates a safe, reliable connection between your tow vehicle and your trailerTested in-house for safety
    $74.09




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.

Featured Brands

Related Categories

Hitch Electrical & Wiring Reviews

141 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
CARiD FacebookCARiD XCARiD YouTube ChannelCARiD PinterestCARiD Instagram
All manufacturer names, symbols, and descriptions, used in our images and text are used solely for identification purposes only. It is neither inferred nor implied that any item sold by CARiD.com is a product authorized by or in any way connected with any vehicle manufacturers displayed on this page.
CUSTOMER SERVICE
INFORMATION
CONTACTS