Trailer Hitch Wiring & Electrical
- Dorman®Trailer Tow Harness Connector (924-611)Trailer Tow Harness Connector by Dorman®. 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 Dorman will last a lifetime....No special tools necessary for installationMounting bracket included to assist with installation$70.04
- Hopkins®Plug-In Simple!® Towing Wiring Harness with 4-Flat Connector (40165)Plug-In Simple!® Towing Wiring Harness with 4-Flat Connector (40165) by Hopkins®. 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,...Plug-In Simple!® Wiring Kit: No cutting, No splicing- Saves timeUtilizes OEM connectors for enhanced fit and weatherproofing$21.49
- Hopkins®Plug-In Simple!® Towing Wiring Harness with 4-Flat Connector (41155)Plug-In Simple!® Towing Wiring Harness with 4-Flat Connector (41155) by Hopkins®. 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,...Plug-In Simple!® Wiring Kit: No cutting, No splicing, Saves timeUtilizes OEM connectors - enhanced fit and weatherproofing$19.66
- Hopkins®Plug-In Simple!® Towing Wiring Harness with 4-Flat Connector (40145)Plug-In Simple!® Towing Wiring Harness with 4-Flat Connector (40145) by Hopkins®. 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,...Plug-In Simple!® Wiring Kit: No cutting, No splicing- Saves timeUtilizes OEM connectors for enhanced fit and weatherproofing$30.82
- Ford OETrailer Hitch Adapter (HC3Z19H282A)Trailer Hitch Adapter (HC3Z19H282A) by Ford OE. If you want to keep your Ford performing the way it did when it left the factory, rely on Ford OE products. Manufactured to strict specifications for fit, form, and function, they not only...Genuine OEM Ford part made to fit your vehicle perfectlyDesigned to restore OEM performance for a safe ride$32.72
- Ford OETrailer Hitch Adapter (HC3Z19H282B)Trailer Hitch Adapter (HC3Z19H282B) by Ford OE. If you want to keep your Ford performing the way it did when it left the factory, rely on Ford OE products. Manufactured to strict specifications for fit, form, and function, they not only...Genuine OEM Ford part made to fit your vehicle perfectlyDesigned to restore OEM performance for a safe ride$37.65
- Ford OETrailer Hitch Adapter (F4TZ14489M)Trailer Hitch Adapter (F4TZ14489M) by Ford OE. If you want to keep your Ford performing the way it did when it left the factory, rely on Ford OE products. Manufactured to strict specifications for fit, form, and function, they not only...Genuine OEM Ford part made to fit your vehicle perfectlyDesigned to restore OEM performance for a safe ride$50.01
- Ram OETrailer Hitch Adapter (68165918AA)Trailer Hitch Adapter (68165918AA) by Ram OE. Want to be sure that your prized possession will operate the way it was designed to and that the repair will be done right the first time? Then RAM OE parts and accessories are right up your...Genuine RAM OEM part designed to fit your specific vehicle perfectlyCrafted from premium-grade materials to ensure superior quality$30.17
- CURT®Dual-Output Connector with Backup Alarm (57101)Dual-Output Connector with Backup Alarm (57101) by CURT®. Plugs Into Round Uscar Socket. Provides a 7-way RV blade, 4-way flat socket and backup alarm. Whether you're a contractor on your way to the jobsite or just a casual fisherman...Splices into the vehicle’s wiring to provide a connection for a trailer plugProudly made in Wisconsin, from start to finish$32.37
- CURT®Mini Fuse Bypass Switch (58475)Mini Fuse Bypass Switch (58475) by CURT®. Bulk. 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 -...Splices into the vehicle’s wiring to provide a connection for a trailer plugProudly made in Wisconsin, from start to finish$52.88
- CURT®Mini Fuse Bypass Switch (58455)Mini Fuse Bypass Switch (58455) by CURT®. Bulk. 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 -...Splices into the vehicle’s wiring to provide a connection for a trailer plugProudly made in Wisconsin, from start to finish$52.88
- CURT®Mini Fuse Bypass Switch (58445)Mini Fuse Bypass Switch (58445) by CURT®. Bulk. 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 -...Splices into the vehicle’s wiring to provide a connection for a trailer plugProudly made in Wisconsin, from start to finish$49.50
- CURT®Mini Fuse Bypass Switch (58435)Mini Fuse Bypass Switch (58435) by CURT®. Bulk. 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 -...Splices into the vehicle’s wiring to provide a connection for a trailer plugProudly made in Wisconsin, from start to finish$45.80
- CURT®T-Connector (56102)T-Connector 3-Wire System with Powered Converter by CURT®. For Models without Tow Plug, 3-wire System, Location: S4. When your vehicle does not readily provide an electrical connection for hooking up your trailer, CURT electrical...Uses plug-and-play connectors and provides a standard trailer wiring outputTested in-house for safety$45.80
- CURT®Tail Light Converter (56175)Tail Light Converter by CURT®. 3-Wire to 2-Wire System, Circuit Protected. When your vehicle does not readily provide an electrical connection for hooking up your trailer, CURT electrical converts offer the solution. Working tail lights...Uses plug-and-play connectors and provides a standard trailer wiring outputTested in-house for safety$29.42
- CURT®Tail Light Converter (7.5 Amps Per Circuit for Turn and Brake Lights / 7.5 Amps Per Circuit for Tail Lights) (56190)Tail Light Converter 7.5 Amps Per Circuit for Turn and Brake Lights / 7.5 Amps Per Circuit for Tail Lights (56190) by CURT®. When your vehicle does not readily provide an electrical connection for hooking up your trailer, CURT...Uses plug-and-play connectors and provides a standard trailer wiring outputTested in-house for safety$45.80
- ACDelco®GM Original Equipment™ 2-Way Shock Absorber Control Actuator Connector (PT786)GM Original Equipment™ 2-Way Shock Absorber Control Actuator Connector by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect for your...Excellent replacement for the OEM part that offers precise fit and functionDesigned to get back your suspension system to its proper operation$30.72
- ACDelco®GM Original Equipment™ Body Wiring Harness Connector (PT1486)GM Original Equipment™ Body Wiring Harness Connector (PT1486) by ACDelco®. Looking to maintain the top condition of your electrical system? We are ready to help you! Just choose from their immense selection of premium replacement...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$64.30
- ACDelco®GM Original Equipment™ Tail Light Connector (PT919)GM Original Equipment™ Tail Light Connector (PT919) by ACDelco®. Finish: Black. Looking to maintain the top condition of your electrical system? We are ready to help you! Just choose from their immense selection of premium replacement...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$35.15
- Tekonsha®T-One Connector (118660)T-One Connector 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 vehicle's..."Factory" appearanceQuick and easy installation$84.51
- Tekonsha®T-One Connector (118747)T-One Connector with Upgraded Circuit Protected ModuLite® HD Module by Tekonsha®. One-year warranty. 4-Way Flat. T-One Connectors require no splicing of vehicle wires. Simply locate your vehicles wiring harness connector, unplug the..."Factory" appearanceQuick and eas installation$80.07
- Tekonsha®T-One Connector (118812)T-One Connector with Upgraded Circuit Protected ModuLite® HD Module by Tekonsha®. One-year warranty. 3 Wire System. T-One Connectors require no splicing of vehicle wires. Simply locate your vehicles wiring harness connector, unplug the..."Factory" appearanceQuick and eas installation$118.00
- Tekonsha®T-One Connector (118515)T-One Connector with Upgraded Circuit Protected ModuLite® HD Module by Tekonsha®. One-year warranty. 4-Way Flat. T-One Connectors require no splicing of vehicle wires. Simply locate your vehicles wiring harness connector, unplug the..."Factory" appearanceQuick and easy installation$101.41
- Tekonsha®T-One Connector (118412)T-One Connector with Circuit Protected ModuLite® Module by Tekonsha®. One-year warranty. 4-Way Flat. T-One Connectors require no splicing of vehicle wires. Simply locate your vehicles wiring harness connector, unplug the connection and..."Factory" appearanceQuick and easy installation$95.78
- Tekonsha®T-One Connector (118651)T-One Connector 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 vehicle's..."Factory" appearanceQuick and easy installation$142.27
- Tekonsha®T-One Connector (118362)T-One Connector with Converter by Tekonsha®. One-year warranty. 3 Wire System. T-One Connectors require no splicing of vehicle wires. Simply locate your vehicles wiring harness connector, unplug the connection and insert the T-One..."Factory" appearanceQuick and easy installation$78.88
- Tekonsha®T-One Connector (118308)T-One Connector with Converter by Tekonsha®. One-year warranty. 3 Wire System. T-One Connectors require no splicing of vehicle wires. Simply locate your vehicles wiring harness connector, unplug the connection and insert the T-One..."Factory" appearanceQuick and easy installation$62.55
- Tekonsha®T-One Connector (118779)T-One Connector with Upgraded Circuit Protected ModuLite® HD Module by Tekonsha®. One-year warranty. 4-Way Flat. T-One Connectors require no splicing of vehicle wires. Simply locate your vehicles wiring harness connector, unplug the..."Factory" appearanceQuick and eas installation$137.81
- Tekonsha®T-One Connector (118459)T-One Connector with Circuit Protected ModuLite® Module by Tekonsha®. One-year warranty. 3 Wire System. T-One Connectors require no splicing of vehicle wires. Simply locate your vehicles wiring harness connector, unplug the connection..."Factory" appearanceQuick and easy installation$80.07
- Tekonsha®T-One Connector (118428)T-One Connector with Circuit Protected ModuLite® Module by Tekonsha®. One-year warranty. 3 Wire System. T-One Connectors require no splicing of vehicle wires. Simply locate your vehicles wiring harness connector, unplug the connection..."Factory" appearanceQuick and easy installation$90.76
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
- 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