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Trailer Plug Adapters

A trailer plug adapter offers a simple, reliable solution for bridging the connection between your vehicle and trailer if the connector types are different. We offer everything from 4-way flat to 7-way RV blade, as well as extension harnesses and OE connector options.

New to trailer wiring?

Shop Trailer Plug Adapters for your Vehicle
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CURT 4-Way to 5-Way Flat Adapter for Boat Trailer Surge Brakes #57187 View Product
Curt™ CURT 4-Way to 5-Way Flat Adapter for Boat Trailer Surge Brakes #57187

SKU: 2020103550

$13.95
Universal Vehicle Fit
CURT Electrical Adapter with Tester (4-Way Flat Vehicle to 7-Way RV Blade Trailer) #57676 View Product
Curt™ CURT Electrical Adapter with Tester (4-Way Flat Vehicle to 7-Way RV Blade Trailer) #57676

SKU: 2020103588

$41.95
Universal Vehicle Fit
CURT Electrical Adapter (4-Way Flat Vehicle to 6-Way Round Trailer) #57183 View Product
Curt™ CURT Electrical Adapter (4-Way Flat Vehicle to 6-Way Round Trailer) #57183

SKU: 2020103546

$26.95
Universal Vehicle Fit
CURT Dual-Output Electrical Adapter with Tester (Adds 7-Way RV Blade to 4-Way Flat) #57674 View Product
Curt™ CURT Dual-Output Electrical Adapter with Tester (Adds 7-Way RV Blade to 4-Way Flat) #57674

SKU: 2020103587

$48.95
Universal Vehicle Fit
CURT 4-Way Flat Vehicle-Side to USCAR Wiring Adapter #56476 View Product
Curt™ CURT 4-Way Flat Vehicle-Side to USCAR Wiring Adapter #56476

SKU: 2022326383

$41.95
Universal Vehicle Fit
CURT Dual-Output Adapter with Backup Alarm (4-Way Flat to 7-Way RV Blade Trailer) #57102 View Product
Curt™ CURT Dual-Output Adapter with Backup Alarm (4-Way Flat to 7-Way RV Blade Trailer) #57102

SKU: 2020103545

$47.95
Universal Vehicle Fit
CURT Dinghy Towing Electrical Adapter (4-Way Flat Vehicle to 6-Way Round) #58981 View Product
Curt™ CURT Dinghy Towing Electrical Adapter (4-Way Flat Vehicle to 6-Way Round) #58981

SKU: 2021017470

$74.95
Universal Vehicle Fit
CURT Electrical Adapter (7-Way RV Blade to 6-Way Round Trailer, Center Pin Brake) #57660 View Product
Curt™ CURT Electrical Adapter (7-Way RV Blade to 6-Way Round Trailer, Center Pin Brake) #57660

SKU: 2020103583

$10.95
Universal Vehicle Fit
CURT Adapter (7-Way RV Blade to 6-Way Round Trailer, Center Pin Auxiliary, Packaged) #57261 View Product
Curt™ CURT Adapter (7-Way RV Blade to 6-Way Round Trailer, Center Pin Auxiliary, Packaged) #57261

SKU: 2020103569

$13.95
Universal Vehicle Fit
CURT Electrical Adapter (4-Way Round Vehicle to 4-Way Flat Trailer) #58414 View Product
Curt™ CURT Electrical Adapter (4-Way Round Vehicle to 4-Way Flat Trailer) #58414

SKU: 2020103683

$8.95
Universal Vehicle Fit
CURT Electrical Adapter (6-Way Round Vehicle to 4-Way Flat Trailer) #57621 View Product
Curt™ CURT Electrical Adapter (6-Way Round Vehicle to 4-Way Flat Trailer) #57621

SKU: 2020103579

$9.95
Universal Vehicle Fit
CURT Electrical Adapter (6-Way Round Vehicle to 4-Way Flat Trailer) #57620 View Product
Curt™ CURT Electrical Adapter (6-Way Round Vehicle to 4-Way Flat Trailer) #57620

SKU: 2020103578

$8.95
Universal Vehicle Fit
CURT Adapter with Backup Alarm (7-Way RV Blade Vehicle to 4-Way Flat Trailer) #57724 View Product
Curt™ CURT Adapter with Backup Alarm (7-Way RV Blade Vehicle to 4-Way Flat Trailer) #57724

SKU: 2020103590

$22.95
Universal Vehicle Fit
CURT Electrical Adapter (7-Way RV Blade Vehicle to 5-Way Flat Trailer, Packaged) #57251 View Product
Curt™ CURT Electrical Adapter (7-Way RV Blade Vehicle to 5-Way Flat Trailer, Packaged) #57251

SKU: 2020103566

$14.95
Universal Vehicle Fit
CURT Adapter with Tester (7-Way RV Blade to 6-Round Trailer, Center Pin Auxiliary) #57255 View Product
Curt™ CURT Adapter with Tester (7-Way RV Blade to 6-Round Trailer, Center Pin Auxiliary) #57255

SKU: 2020103567

$20.95
Universal Vehicle Fit
CURT 57300 8-Prong to USCAR Wiring Harness Adapter, Select Chrysler, Dodge, Freightliner, Jeep, Mitsubishi View Product
Curt™ CURT 57300 8-Prong to USCAR Wiring Harness Adapter, Select Chrysler, Dodge, Freightliner, Jeep, Mitsubishi

SKU: 2022119000

$27.95
CURT Electrical Adapter (7-Way Round Vehicle to 4-Way Flat Trailer, Packaged) #57041 View Product
Curt™ CURT Electrical Adapter (7-Way Round Vehicle to 4-Way Flat Trailer, Packaged) #57041

SKU: 2020103543

$11.95
Universal Vehicle Fit
CURT LED Electrical Adapter (7-Way RV Blade Vehicle to 4 or 5-Way Flat Trailer) #57004 View Product
Curt™ CURT LED Electrical Adapter (7-Way RV Blade Vehicle to 4 or 5-Way Flat Trailer) #57004

SKU: 2020103539

$23.95
Universal Vehicle Fit
CURT Electrical Adapter (7-Way RV Blade Vehicle to 4-Flat Trailer, Packaged) #57241 View Product
Curt™ CURT Electrical Adapter (7-Way RV Blade Vehicle to 4-Flat Trailer, Packaged) #57241

SKU: 2020103563

$10.95
Universal Vehicle Fit
CURT Electrical Adapter with Tester (6-Way Round Vehicle to 4-Way Flat Trailer) #57627 View Product
Curt™ CURT Electrical Adapter with Tester (6-Way Round Vehicle to 4-Way Flat Trailer) #57627

SKU: 2020103582

$11.95
Universal Vehicle Fit
CURT 4-Way Flat Magnetic Connector Adapter #58306 View Product
Curt™ CURT 4-Way Flat Magnetic Connector Adapter #58306

SKU: 2023062981

$24.95
Universal Vehicle Fit
CURT Adapter (7-Way RV Blade to 6-Way Round Trailer, Center Pin Brake, Packaged) #57265 View Product
Curt™ CURT Adapter (7-Way RV Blade to 6-Way Round Trailer, Center Pin Brake, Packaged) #57265

SKU: 2020103570

$8.95
Universal Vehicle Fit
CURT Electrical Adapter (7-Way RV to 6-Round Trailer, Center Pin Brake, Packaged) #57661 View Product
Curt™ CURT Electrical Adapter (7-Way RV to 6-Round Trailer, Center Pin Brake, Packaged) #57661

SKU: 2020103584

$13.95
Universal Vehicle Fit
CURT LED Electrical Adapter (7-Way RV Blade Vehicle to 6-Way Round Trailer) #57005 View Product
Curt™ CURT LED Electrical Adapter (7-Way RV Blade Vehicle to 6-Way Round Trailer) #57005

SKU: 2020103540

$25.95
Universal Vehicle Fit
CURT connector plug adapter for 4-way flat and 7-way RV bladeCURT connector plug adapter for 4-way flat and 7-way RV blade

Keep Connected with a Trailer Plug Adapter

There are many types of trailer wiring harnesses and connector plugs, and eventually, you may need to tow a trailer with a different trailer wiring harness than your tow vehicle. A trailer plug adapter will help you solve this wiring issue.

Our trailer wiring adapters will allow you to convert plugs and harnesses that are otherwise incompatible. Our trailer light adapter makes a reliable connection between mismatched trailer plugs and vehicle sockets.

Our dinghy trailer wiring adapters will allow you to flat tow a vehicle with a 4-flat plug using a vehicle with a 6-way round socket. If you're dinghy towing behind your RV, we also have a solution for that! Our 4-way flat trailer wiring adapter works with 7-way RV blade sockets. Simply plug the adapter into place and go!

We offer an array of adapters to accommodate most types of plugs and sockets, and include 4-way flat, 4-way round, 5-way flat, 6-way round, 7-way RV blades, and more. Our adapters are ideal for making differing trailer wiring harnesses work together. Simply find the trailer plug adapter that works between your trailer and tow vehicle, plug in, and tow!

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