Trailer Hitch Wiring & Electrical
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- CURT®Heavy-Duty Replacement OEM 7-Way RV Blade Socket (55416)Heavy-Duty Replacement OEM 7-Way RV Blade Socket 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...Proudly made in Wisconsin, from start to finishBacked by a one-year parts warranty$17.49
- CURT®OEM Car Socket for 7-Way RV Blade (56415)OEM Car Socket for 7-Way RV Blade (56415) by CURT®. Twist-In Design. Plugs into USCAR socket to provide a 7-way RV blade connector. Like trailer hitches and ball mounts, electrical connectors range all over the board in shape, size and...Splices into the vehicle’s wiring to provide a connection for a trailer plugProudly made in Wisconsin, from start to finish$15.45
- CURT®OEM Car Socket for 7-Way RV Blade (55415)OEM Car Socket for 7-Way RV Blade (55415) by CURT®. Non Twist-In Design. Plugs into USCAR socket to provide a 7-way RV blade connector. There are several different types of connectors used to supply power from a tow vehicle's electrical...Splices into the vehicle’s wiring to provide a connection for a trailer plugProudly made in Wisconsin, from start to finish$16.71
- ACDelco®GM Original Equipment™ Multi-Purpose Wire Connector (PT125)GM Original Equipment™ Multi-Purpose Wire Connector (PT125) by ACDelco®. ACDelco GM Original Equipment Pigtail Connectors are connectors ready to be spliced into vehicle harnesses, and are GM-recommended replacements for your...Protective outer coverings help provide long-lasting durabilityColor-coded wires allow for easy installation$10.41
- ACDelco®Genuine GM Parts™ Secondary Air Injection Relay (13502674)Genuine GM Parts™ Secondary Air Injection Relay 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 lifestyle,...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$17.42
- ACDelco®Professional™ Inline to Trailer Wiring Harness Connector (TC177)Professional™ Inline to Trailer Wiring Harness Connector (TC177) by ACDelco®. 7 Way. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect for your...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$53.92
- Tekonsha®7-Way Towing Wiring Harness Prep Kit (22124)7-Way Towing Wiring Harness Prep Kit by Tekonsha®. With Clamshell Package. One-year warranty. Transform your vehicle into a reliable load-hauling machine by installing this superior trailer hitch. With this product that is made...No Cutting Or Splicing Vehicle WiringIsolates Trailer Light Operation from Tow Vehicle's Electrical System$106.92
- Tekonsha®7-Way Towing Wiring Harness Prep Kit (22114)7-Way Towing Wiring Harness Prep Kit by Tekonsha®. One-year warranty. Transform your vehicle into a reliable load-hauling machine by installing this superior trailer hitch. With this product that is made utilizing only the highest...No Cutting Or Splicing Vehicle WiringIsolates Trailer Light Operation from Tow Vehicle's Electrical System$206.34
- Hopkins Towing®Multi-Tow™ 4-Wire Flat Towing Wiring Kit (41150)Multi-Tow™ 4-Wire Flat Towing Wiring Kit by Hopkins Towing®. Don't splice onto your vehicle's factory wiring harness. Simply plug in this Hopkins® vehicle wiring kit featuring exact OEM matching connectors for a perfect weather-tight...Plug-In Simple!® Wiring KitUtilizes OEM connectors for enhanced fit and weatherproofing$53.33
- Hopkins®Endurance™ 5th Wheel and Gooseneck Wiring Harness (42137)Endurance™ 5th Wheel and Gooseneck Harness (42137) by Hopkins®. 7 Blade with reinforced 90° angle. Want to simplify the hookup of your gooseneck or 5th-wheel trailer? Tired of reaching those hard-to-get places while connecting them...Plug-In Simple!® Endurance ™ 7 Blade with reinforced 90° angle installs easily in hard to reach placesPlugs directly into OEM wiring system$85.96
- Hopkins®Endurance™ 5th Wheel and Gooseneck Wiring Harness (41157)Endurance™ 5th Wheel and Gooseneck Harness (41157) by Hopkins®. 7 Blade with reinforced 90° angle. Want to simplify the hookup of your gooseneck or 5th-wheel trailer? Tired of reaching those hard-to-get places while connecting them...Plug-In Simple!® Endurance ™ 7 Blade with reinforced 90° angle installs easily in hard to reach placesPlugs directly into OEM wiring system$77.91
- Hopkins®Endurance™ 5th Wheel and Gooseneck Wiring Harness (40167)Endurance™ 5th Wheel and Gooseneck Harness by Hopkins®. 7 Blade with reinforced 90° angle. 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...Plug-In Simple!® Endurance ™ 7 Blade with reinforced 90° angle installs easily in hard to reach placesPlugs directly into OEM wiring system$85.47
- Hopkins®Endurance™ 5th Wheel and Gooseneck Wiring Harness (40157)Endurance™ 5th Wheel and Gooseneck Wiring Harness (40157) by Hopkins®. 7 Blade with reinforced 90° angle. Want to simplify the hookup of your gooseneck or 5th-wheel trailer? Tired of reaching those hard-to-get places while connecting...Plug-In Simple!® Endurance ™ 7 Blade with reinforced 90° angle installs easily in hard to reach placesPlugs directly into OEM wiring system$86.15
- Hopkins®Endurance™ 5th Wheel and Gooseneck Wiring Harness (40147)Endurance™ 5th Wheel and Gooseneck Wiring Harness (40147) by Hopkins®. 7 Blade with reinforced 90° angle. Want to simplify the hookup of your gooseneck or 5th-wheel trailer? Tired of reaching those hard-to-get places while connecting...Plug-In Simple!® Endurance ™ 7 Blade with reinforced 90° angle installs easily in hard to reach placesPlugs directly into OEM wiring system$84.34
- Husky Towing®Trailer Brake System Harness (31858)Trailer Brake System Harness by Husky Towing®. Plug Quantity: 2. With connector. Compatible With Controllers With a Connector; 2 Plug. This top-grade product is expertly made in compliance with stringent industry standards to offer a...The Safest Or Easiest Way To Wire A Brake Control To Your Tow-Prepped VehicleSimply Attach The Adapter To The Brake Control$19.44
- Husky Towing®Trailer Brake System Harness (31860)Trailer Brake System Harness by Husky Towing®. Plug Quantity: 2. With connector. Compatible With Controllers With a Connector; 2 Plug. This top-grade product is expertly made in compliance with stringent industry standards to offer a...The Safest Or Easiest Way To Wire A Brake Control To Your Tow-Prepped VehicleSimply Attach The Adapter To The Brake Control$19.17
- Husky Towing®Trailer Brake System Harness (31865)Trailer Brake System Harness by Husky Towing®. Plug Quantity: 1. Compatible With Controllers Without a Connector; Universal Plug; 1 Plug. This top-grade product is expertly made in compliance with stringent industry standards to offer a...The Safest Or Easiest Way To Wire A Brake Control To Your Tow-Prepped VehicleSimply Attach The Adapter To The Brake Control$20.11
- Husky Towing®Trailer Brake System Harness (32253)Trailer Brake System Harness by Husky Towing®. Plug Quantity: 2. With connector. Compatible With Husky Quest/ Escort/ Digital/ Ascend Controller; 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$20.26
- Husky Towing®Trailer Brake System Harness (30012)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$19.56
- Husky Towing®Trailer Brake System Harness (32079)Trailer Brake System Harness (32079) 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$16.24
- Husky Towing®Trailer Brake System Harness (31869)Trailer Brake System Harness (31869) 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$14.71
- Husky Towing®Trailer Brake System Harness (31867)Trailer Brake System Harness (31867) 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$20.00
- Husky Towing®Trailer Brake System Harness (31871)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$12.59
- Husky Towing®Trailer Brake System Harness (31864)Trailer Brake System Harness (31864) 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$21.62
- Husky Towing®Vehicle End Trailer Wiring Connector (30406)Vehicle End Trailer Wiring Connector (30406) by Husky Towing®. End Type: 7 Blade. With Harness. Lid Angle: 180°. OEM Style 7 Way Blade; With Quick Install (TM) Connector; With 180 Degree Reinforced Lid. This top-grade product is...Allows For Didge Tructs To Adapt To The Quick-Install™ 7 RV BladeReinforced Lid Opens 180 Degrees To Prevent Breaking$39.32
- Husky Towing®Vehicle End Trailer Wiring Connector (30345)Vehicle End Trailer Wiring Connector (30345) by Husky Towing®. End Type: 7 Round. With Harness. Fifth Wheel Wiring Harness; 7 Way Round; Plug In Simple (R) Endurance (TM) 7 Blade 90 Degree Angle. This top-grade product is expertly made...Easily Route Towing Electrical Functions Into The Truck Bed For Fifth Wheel TrailersLimited 1 Year Warranty$113.99
- Husky Towing®Vehicle End Trailer Wiring Connector (17363)Vehicle End Trailer Wiring Connector (17363) by Husky Towing®. End Type: 7 Blade to 4 Flat. With 2 Door Connector Protection. 4 Way Flat And 7 Way Round Connector. 4 Way Flat And 7 Way Round; Utilizes OEM Connectors; 2 Door Connector...Weatherproof DesignLimited 1 Year Warranty$56.44
- Husky Towing®Vehicle End Trailer Wiring Connector (30175)Vehicle End Trailer Wiring Connector (30175) by Husky Towing®. End Type: 7 Blade. Packaging: Carded. 3-14 Chevy Express 1500 7 Way Round Vehicle End Connector. Vehicle End; 7 Way Round; Without Lead Wire. This Husky Towing vehicle end...Durable Lid Opens 180 DegreesUltimate Weatherproofing$15.43
- Husky Towing®Vehicle End Trailer Wiring Connector (13092)Vehicle End Trailer Wiring Connector (13092) by Husky Towing®. End Type: 7 Blade to 4 Flat. 7-11 Dodge Nitro 4 Way Flat & 7 RV Connector with Dust Cover. 4 Way Flat And 7 RV; With Dust Cover/ Cable Ties And Grease Packet. It includes...Limited 1 Year WarrantyPerfect blend of leading innovations and superior workmanship$47.28
- DIY Solutions®Trailer Hitch Plug (BAS01865)Trailer Hitch Plug (BAS01865) by DIY Solutions®. 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...Universal replacement ensures a proper fit every timeFully threaded body for easy installation in many unique applications$122.47$134.59Save $12.12 (9%)
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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Trailer Hitches
Hitch Balls & Mounts
Brake Controllers
Pintle Hitches
Hitch Accessories
5th Wheel Hitches
Gooseneck Hitches
Weight Distribution
Sway Control
Front Hitches
Tow Bars
Trailer Couplers
Trailer Brakes
Trailer Breakaway Kit
Hitch Cargo Carriers
Hitch Covers
Hitch Steps
Straps & Tie Downs
Trailers
Trailer Jacks
Trailer Winches
Trailer Tool Boxes
Trailer Accessories
Tow Lights