Trailer Hitch Wiring & Electrical
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- CURT®4-Way Round Vehicle End Connector Socket (58070)Universal 4-Way Round Vehicle End Connector Socket (58070) by CURT®. Bulk. Includes vehicle-end socket only. Like trailer hitches and ball mounts, electrical connectors range all over the board in shape, size and capability, but no...Splices into the vehicle’s wiring to provide a connection for a trailer plugProudly made in Wisconsin, from start to finish$10.63
- CURT®48" 4-Way Flat Connector Plug (58032)Universal 48" 4-Way Flat Connector Plug (58032) by CURT®. Bulk. Without Hardware. Includes trailer-end plug with 48" bonded wire. 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$7.66
- CURT®48" 4-Way Flat Connector Plug (58348)Universal 48" 4-Way Flat Connector Plug (58348) by CURT®. With Package. Without Hardware. Includes trailer-end plug with 48" bonded wire. Like trailer hitches and ball mounts, electrical connectors range all over the board in shape,...Splices into the vehicle’s wiring to provide a connection for a trailer plugProudly made in Wisconsin, from start to finish$8.43
- CURT®48" 4-Way Flat Connector Plug Kit (58349)Universal 48" 4-Way Flat Connector Plug Kit (58349) by CURT®. With Hardware. Includes trailer-end plug with bonded wire and hardware. Packaged. Like trailer hitches and ball mounts, electrical connectors range all over the board in...Splices into the vehicle’s wiring to provide a connection for a trailer plugProudly made in Wisconsin, from start to finish$9.02
- CURT®48" 4-Way Flat Connector Plug and Socket (58355)Universal 48" 4-Way Flat Connector Plug and Socket (58355) by CURT®. Packaged. Includes trailer-end plug with 12" lead and vehicle-end socket with 48" lead. Like trailer hitches and ball mounts, electrical connectors range all over the...Splices into the vehicle’s wiring to provide a connection for a trailer plugProudly made in Wisconsin, from start to finish$11.62
- CURT®48" 4-Way Flat Connector Plug and Socket Kit (58305)Universal 48" 4-Way Flat Connector Plug and Socket Kit (58305) by CURT®. Packaged. With Hardware. Includes trailer-end plug with 12" lead, vehicle-end socket with 48" lead and hardware. Like trailer hitches and ball mounts, electrical...Splices into the vehicle’s wiring to provide a connection for a trailer plugProudly made in Wisconsin, from start to finish$11.75
- CURT®48" 4-Way Flat Connector Socket (58042)Universal 48" 4-Way Flat Connector Socket (58042) by CURT®. Bulk. Without Hardware. Includes vehicle-end socket with 48" bonded wire. Like trailer hitches and ball mounts, electrical connectors range all over the board in shape, size...Splices into the vehicle’s wiring to provide a connection for a trailer plugProudly made in Wisconsin, from start to finish$7.66
- CURT®48" 5-Way Flat Trailer End Connector Plug (58540)Universal 48" 5-Way Flat Trailer End Connector Plug (58540) by CURT®. Bulk. Includes trailer-end plug with 48" bonded wire. 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$9.64
- CURT®5-Way Connector Socket Mounting Bracket (58303)Universal 5-Way Connector Socket Mounting Bracket by CURT®. Leaving your trailer lights wiring harness lying around in the trunk of your vehicle is obnoxious and can even be unsafe. The wires can get caught on cargo and become damaged...Precisely welded for a perfect fit and functionProtected by an industry-leading, dual-coat finish - inside and out$5.67
- CURT®6' 7-Way RV Blade Replacement Harness (56601)Universal 6' 7-Way RV Blade Replacement Harness (56601) by CURT®. Bulk. Replaces a trailer-end 7-way RV blade plug. Like trailer hitches and ball mounts, electrical connectors range all over the board in shape, size and capability, but...Precisely welded for a perfect fit and functionProtected by an industry-leading, dual-coat finish - inside and out$34.98
- CURT®6-Way Round Trailer End Connector Plug (58120)Universal 6-Way Round Trailer End Connector Plug (58120) by CURT®. Bulk. Material: Plastic Chrome. Includes trailer-end plug only. 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$8.01
- CURT®6-Way Round Trailer End Connector Plug (58080)Universal 6-Way Round Trailer End Connector Plug (58080) by CURT®. Bulk. Material: Die-Cast Metal. Includes trailer-end plug only. 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$6.74
- CURT®6-Way Round Vehicle End Connector Socket (58130)Universal 6-Way Round Vehicle End Connector Socket (58130) by CURT®. Bulk. Material: Plastic. Includes vehicle-end socket only. 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$6.43
- CURT®6-Way Round Vehicle End Connector Socket (58090)Universal 6-Way Round Vehicle End Connector Socket (58090) by CURT®. Bulk. Material: Die-Cast Metal. Includes vehicle-end socket only. Like trailer hitches and ball mounts, electrical connectors range all over the board in shape, size...Splices into the vehicle’s wiring to provide a connection for a trailer plugProudly made in Wisconsin, from start to finish$11.36
- CURT®6-Way Round Vehicle End and Trailer End Connector Plug and Socket (58093)Universal 6-Way Round Vehicle End and Trailer End Connector Plug and Socket (58093) by CURT®. Includes trailer-end plug, vehicle-end socket, mounting bracket and hardware. Packaged. Like trailer hitches and ball mounts, electrical...Splices into the vehicle’s wiring to provide a connection for a trailer plugProudly made in Wisconsin, from start to finish$18.93
- CURT®6-Way Round Vehicle End and Trailer End Connector Plug and Socket (58092)Universal 6-Way Round Vehicle End and Trailer End Connector Plug and Socket (58092) by CURT®. Includes trailer-end plug and vehicle-end socket. Packaged. Like trailer hitches and ball mounts, electrical connectors range all over the...Splices into the vehicle’s wiring to provide a connection for a trailer plugProudly made in Wisconsin, from start to finish$16.44
- CURT®6-Way Square Trailer End Connector Plug (58037)Universal 6-Way Square Trailer End Connector Plug (58037) by CURT®. Trailer End. Includes trailer-end plug with 12" wire lead. Packaged. Like trailer hitches and ball mounts, electrical connectors range all over the board in shape, size...Splices into the vehicle’s wiring to provide a connection for a trailer plugProudly made in Wisconsin, from start to finish$7.18
- CURT®6-Way Square Trailer End and Vehicle End Plug and Socket (58034)Universal 6-Way Square Trailer End and Vehicle End Plug and Socket (58034) by CURT®. Trailer End and Vehicle End. Includes trailer-end plug and vehicle-end socket on 12" wire loop. Packaged. Like trailer hitches and ball mounts,...Splices into the vehicle’s wiring to provide a connection for a trailer plugProudly made in Wisconsin, from start to finish$10.30
- CURT®6-Way Square Vehicle End Connector Socket (58035)Universal 6-Way Square Vehicle End Connector Socket (58035) by CURT®. Vehicle End. Includes vehicle-end socket with 12" wire lead. Packaged. Like trailer hitches and ball mounts, electrical connectors range all over the board in shape,...Splices into the vehicle’s wiring to provide a connection for a trailer plugProudly made in Wisconsin, from start to finish$6.57
- CURT®60" 4-Way Flat Connector Socket (58040)Universal 60" 4-Way Flat Connector Socket (58040) by CURT®. Bulk. Without Hardware. Includes vehicle-end socket with 60" bonded wire. Like trailer hitches and ball mounts, electrical connectors range all over the board in shape, size...Splices into the vehicle’s wiring to provide a connection for a trailer plugProudly made in Wisconsin, from start to finish$6.41
- CURT®60" 4-Way Flat Connector Socket Kit (58044)Universal 60" 4-Way Flat Connector Socket Kit (58044) by CURT®. Packaged. With Hardware. Includes vehicle-end socket with 60" bonded wire and installation hardware. Like trailer hitches and ball mounts, electrical connectors range all...Splices into the vehicle’s wiring to provide a connection for a trailer plugProudly made in Wisconsin, from start to finish$9.25
- CURT®60" 5-Way Flat Vehicle End Connector Socket (58530)Universal 60" 5-Way Flat Vehicle End Connector Socket (58530) by CURT®. Bulk. Includes vehicle-end socket with 60" bonded wire. 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$10.94
- CURT®7' 5th Wheel and Gooseneck 7-Way Extension Harness (56080)Universal 7' 5th Wheel and Gooseneck 7-Way Extension Harness by CURT®. Routes existing 7-way plug at rear of vehicle into truck bed. Length: 7 ft. There is nothing like the luxury and power that go along with heavy-duty towing. 5th...Provides an extra connector for plugging in your trailer wiringIncludes a right-angle plug for easy installation$53.47
- CURT®7-Way RV Blade Connector Plug and Socket Kit (58152)Universal 7-Way RV Blade Connector Plug and Socket Kit (58152) by CURT®. Includes trailer-end plug, vehicle-end socket, mounting bracket and hardware. Packaged. Like trailer hitches and ball mounts, electrical connectors range all over...Splices into the vehicle’s wiring to provide a connection for a trailer plugProudly made in Wisconsin, from start to finish$17.78
- CURT®7-Way RV Blade Trailer End Connector Plug (58190)Universal 7-Way RV Blade Trailer End Connector Plug (58190) by CURT®. Bulk. Material: Die-Cast Metal. Includes trailer-end plug only. Like trailer hitches and ball mounts, electrical connectors range all over the board in shape, size...Splices into the vehicle’s wiring to provide a connection for a trailer plugProudly made in Wisconsin, from start to finish$8.39
- CURT®7-Way RV Blade Trailer End Connector Plug (58140)Universal 7-Way RV Blade Trailer End Connector Plug (58140) by CURT®. Bulk. Material: Plastic. Includes trailer-end plug only. 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$6.83
- CURT®7-Way RV Blade Vehicle End Connector Socket (58417)Universal 7-Way RV Blade Vehicle End Connector Socket (58417) by CURT®. With Integrated Bracket. Packaged. Material: Plastic. Includes vehicle-end socket and integrated mounting bracket. Like trailer hitches and ball mounts, electrical...Splices into the vehicle’s wiring to provide a connection for a trailer plugProudly made in Wisconsin, from start to finish$12.32
- CURT®7-Way RV Blade Vehicle End Connector Socket (58150)Universal 7-Way RV Blade Vehicle End Connector Socket (58150) by CURT®. Without Integrated Bracket. Bulk. Material: Plastic. Includes vehicle-end socket only. Like trailer hitches and ball mounts, electrical connectors range all over...Splices into the vehicle’s wiring to provide a connection for a trailer plugProudly made in Wisconsin, from start to finish$8.76
- CURT®7-Way RV Blade Vehicle End Connector Socket (58220)Universal 7-Way RV Blade Vehicle End Connector Socket (58220) by CURT®. Without Integrated Bracket. Bulk. Material: Die-Cast Metal. Includes vehicle-end socket only. Like trailer hitches and ball mounts, electrical connectors range all...Splices into the vehicle’s wiring to provide a connection for a trailer plugProudly made in Wisconsin, from start to finish$12.43
- CURT®7-Way RV Blade to 5-Flat Electrical Adapter Harness (57281)Universal 7-Way RV Blade to 5-Flat Electrical Adapter Harness 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...Splices into the vehicle’s wiring to provide a connection for a trailer plugProudly made in Wisconsin, from start to finish$37.66
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
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Brake Controllers
Pintle Hitches
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5th Wheel Hitches
Gooseneck Hitches
Weight Distribution
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