Trailer Hitch Wiring & Electrical
- CURT®7-Way Round Connector with SpringUniversal 7-Way Round Connector with Spring by CURT®. Like trailer hitches and ball mounts, electrical connectors range all over the board in shape, size and capability, but no matter what your trailer's electrical functions are, you...Splices into the vehicle’s wiring to provide a connection for a trailer plugProudly made in Wisconsin, from start to finish$16.87 - $17.15$17.76 - $18.04Save 5%
- CURT®Butt ConnectorUniversal Butt Connector by CURT®. Like trailer hitches and ball mounts, electrical connectors range all over the board in shape, size and capability, but no matter what your trailer's electrical functions are, you need a solid...Splices into the vehicle’s wiring to provide a connection for a trailer plugProudly made in Wisconsin, from start to finish$11.40 - $16.62$12.01 - $17.49Save 5%
- CURT®Circuit BreakerUniversal Circuit Breaker by CURT®. Whether you're a contractor on your way to the jobsite or just a casual fisherman heading to the boat landing, you need working trailer lights to tow safely and legally. For any towing setup, CURT...Splices into the vehicle’s wiring to provide a connection for a trailer plugProudly made in Wisconsin, from start to finish$4.37 - $5.45$4.59 - $5.73Save 5%
- CURT®Cold-Weather Replacement 7-Way RV Blade HarnessUniversal Cold-Weather Replacement 7-Way RV Blade Harness by CURT®. The wind cuts and the frost bites, but you never let that stop you before. You've got miles to cover and work to get done. When the freezing temperatures of the cold...Splices into the vehicle’s wiring to provide a connection for a trailer plugProudly made in Wisconsin, from start to finish$44.83 - $61.95$47.19 - $65.22Save 5%
- CURT®Convoluted Slit Loom TubingUniversal Convoluted Slit Loom Tubing by CURT®. Whether you're a contractor on your way to the jobsite or just a casual fisherman heading to the boat landing, you need working trailer lights to tow safely and legally. For any towing...Splices into the vehicle’s wiring to provide a connection for a trailer plugProudly made in Wisconsin, from start to finish$0.33 - $14.47$0.35 - $15.24Save up to 6%
- CURT®Insulated Ring TerminalUniversal Insulated Ring Terminal by CURT®. Quantity 100. Like trailer hitches and ball mounts, electrical connectors range all over the board in shape, size and capability, but no matter what your trailer's electrical functions are,...Splices into the vehicle’s wiring to provide a connection for a trailer plugProudly made in Wisconsin, from start to finish$11.96 - $17.67$12.60 - $18.59Save 5%
- CURT®Insulated Spade TerminalUniversal Insulated Spade Terminal by CURT®. Quantity 100. Like trailer hitches and ball mounts, electrical connectors range all over the board in shape, size and capability, but no matter what your trailer's electrical functions are,...Splices into the vehicle’s wiring to provide a connection for a trailer plugProudly made in Wisconsin, from start to finish$11.96 - $15.92$12.60 - $16.76Save 5%
- CURT®Non-powered 3-to-2-Wire Tail Light ConverterUniversal Non-powered 3-to-2-Wire Tail Light Converter by CURT®. 2.1 Amp Turn/Brake, 5 Amp Tail Light. Quantity per Package: 1. 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$13.61 - $18.92$14.32 - $19.92Save 5%
- CURT®Powered 3-to-2-Wire Tail Light ConverterUniversal Powered 3-to-2-Wire Tail Light Converter by CURT®. 3 Amp Turn/Brake, 6 Amp Tail Light. Quantity per Package: 1. One Year Limited. When your vehicle does not readily provide an electrical connection for hooking up your trailer,...Uses plug-and-play connectors and provides a standard trailer wiring outputTested in-house for safety$34.32 - $54.56$36.13 - $57.44Save 5%
- CURT®Powered 3-to-2-Wire Tail Light ConverterUniversal Powered 3-to-2-Wire Tail Light Converter by CURT®. Quantity per Package: 1. When your vehicle does not readily provide an electrical connection for hooking up your trailer, CURT electrical converts offer the solution. Working...Uses plug-and-play connectors and provides a standard trailer wiring outputTested in-house for safety$29.22 - $56.58$30.76 - $59.56Save 5%
- CURT®Powered Converter Wiring KitUniversal Powered Converter Wiring Kit by CURT®. 20' of 12-gauge cross-linked wire with installation hardware. When your vehicle does not readily provide an electrical connection for hooking up your trailer, CURT electrical converts...Uses plug-and-play connectors and provides a standard trailer wiring outputTested in-house for safety$16.73$17.61Save 5%
- CURT®Quick ConnectorsUniversal Quick Connectors by CURT®. Like trailer hitches and ball mounts, electrical connectors range all over the board in shape, size and capability, but no matter what your trailer's electrical functions are, you need a solid...Splices into the vehicle’s wiring to provide a connection for a trailer plugProudly made in Wisconsin, from start to finish$13.63 - $15.26$14.34 - $16.07Save 5%
- CURT®Snap LocksUniversal Snap Locks 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...Precisely welded for a perfect fit and functionProtected by an industry-leading, dual-coat finish - inside and out$17.67 - $62.93$18.59 - $66.25Save 5%
- CURT®Towed-Vehicle RV Harness Add-OnUniversal Towed-Vehicle RV Harness Add-On by CURT®. One Year Limited. 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...Creates a safe, reliable connection between your tow vehicle and your trailerTested in-house for safety$29.22 - $38.15$30.76 - $40.16Save 5%
- Fastway®7-Way Plug CoverUniversal 7-Way Plug Cover by Fastway®. 1 Piece. 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. It will meet your needs and deliver...Revolutionary engineering, cutting-edge designExpected to provide maximum durability and value$4.63 - $8.00
- Hopkins Towing®7 Blade Connector with Jacketed CableUniversal 7 Blade Connector with Jacketed Cable by Hopkins Towing®. With Cardboard Wrap Package. To ensure a secure and reliable connection and consolidate all of the electrical towing functions of your trailer into a single plug, go...Heavy duty constructionWire is heavily insulated with jacketed wire sleeving$38.92 - $46.37
- Hopkins Towing®7 RV Molded ConnectorUniversal 7 RV Molded Connector by Hopkins Towing®. To ensure a secure and reliable connection and consolidate all of the electrical towing functions of your trailer into a single plug, go with this great add-on by Hopkins. Typically...Heavy duty constructionWire is heavily insulated with jacketed wire sleeving$26.16 - $54.73
- Hopkins Towing®Endurance Quick-Fix™ 4-Wire Flat ConnectorUniversal Endurance Quick-Fix™ 4-Wire Flat Connector 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...LED test lights confirm electrical continuityErgonomic grip for easier handling$8.30 - $11.51
- Hopkins Towing®Endurance™ 4-Wire Flat ConnectorUniversal Endurance™ 4-Wire Flat Connector 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,...Ensure a perfect, weather-tight fitBuilt of durable materials to last$6.03 - $8.08
- Hopkins Towing®Endurance™ 5-Wire Flat ConnectorUniversal Endurance™ 5-Wire Flat Connector 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,...Ensure a perfect, weather-tight fitBuilt of durable materials to last$12.20 - $15.06
- Hopkins Towing®Endurance™ 6-Pole Round ConnectorUniversal Endurance™ 6-Pole Round Connector 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,...Ensure a perfect, weather-tight fitBuilt of durable materials to last$15.18 - $19.05
- Hopkins Towing®Endurance™ 7 RV Blade ConnectorUniversal Endurance™ 7 RV Blade Connector 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,...Ensure a perfect, weather-tight fitBuilt of durable materials to last$16.95 - $19.53
- Hopkins Towing®Trailer Wiring Installation KitUniversal Trailer Wiring Installation Kit by Hopkins Towing®. Everything needed to rewire a trailer. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and...Ideal for Y-Harness and 4 conductor wire installationResealable storage case keeps items secure and organized$14.30 - $21.55
- Husky Towing®Custom Trailer Wiring ConnectorUniversal Custom 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....Perfect blend of leading innovations and superior workmanshipManufactured to offer high value and everlasting reliability$4.46 - $56.17
- Husky Towing®Tail Light ConverterUniversal Tail Light Converter 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...Limited 1 Year WarrantyPerfect blend of leading innovations and superior workmanship$20.35 - $112.47
- Husky Towing®Towed Vehicle Wiring KitUniversal Towed Vehicle Wiring Kit 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...Limited 1 Year WarrantyPerfect blend of leading innovations and superior workmanship$38.00 - $45.60
- Husky Towing®Trailer Wiring Connector AdapterUniversal Trailer Wiring Connector Adapter 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....Perfect blend of leading innovations and superior workmanshipManufactured to offer high value and everlasting reliability$9.04 - $77.71
- Husky Towing®Trailer Wiring Connector ExtensionUniversal Trailer Wiring Connector Extension 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....Perfect blend of leading innovations and superior workmanshipManufactured to offer high value and everlasting reliability$2.34 - $16.12
- Husky Towing®Trailer Wiring Connector Mounting BracketUniversal Trailer Wiring Connector Mounting Bracket 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....Limited 1 Year WarrantyPerfect blend of leading innovations and superior workmanship$4.54 - $10.52
- Blue Ox®Coiled Electrical CableUniversal Coiled Electrical Cable by Blue Ox®. 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 quality materials and the...Designed to safely and efficiently haul your loadsMade from the highest quality materials$74.82 - $85.79
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