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Trailer Adapters & Wiring Harnesses

(123 products)

PartsVu is proud to carry a range of trailer accessories including trailer adapters and trailer wiring harnesses from leading manufacturers such as Seachoice, Wesbar, Sierra, RV Pigtails, Pollak Corporation, Hopkins Manufacturing, Attwood Marine, and others.

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  • Wesbar - 5-Flat Trailer End Connector - 4' Wishbone Harness - 4' Ground - 4' Auxiliary - 707283

    Wesbar

    Wesbar - 5-Flat Trailer End Connector - 4' Wishbone Harness - 4' Ground - 4' Auxiliary - 707283

    $20.48 $28.99
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  • Wesbar - 4-Flat Car End Connector - 48" Long - 18" Ground - 707275

    Wesbar

    Wesbar - 4-Flat Car End Connector - 48" Long - 18" Ground - 707275

    $20.24
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  • Wesbar - 4-Flat Extension Harness - 2' Long - 707254

    Wesbar

    Wesbar - 4-Flat Extension Harness - 2' Long - 707254

    $19.64
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  • Wesbar - 5-Flat Plug Loop 24" Long - Car & Trailer End Wiring Harness - 707255

    Wesbar

    Wesbar - 5-Flat Plug Loop 24" Long - Car & Trailer End Wiring Harness - 707255

    $27.88
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  • Wesbar - 4-Flat Trailer End Connector - 18" Wunside Harness - 18" Ground - 707285

    Wesbar

    Wesbar - 4-Flat Trailer End Connector - 18" Wunside Harness - 18" Ground - 707285

    $11.17
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  • Wesbar - Wunside Trailer Connector Bulk - 4-way Wire Harness - 18 inch - 502401

    Wesbar

    Wesbar - Wunside Trailer Connector Bulk - 4-way Wire Harness - 18 inch - 502401

    $7.41
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  • Wesbar - 4-Pin Flat Trailer End Connector - 11 foot - 54000026

    Wesbar

    Wesbar - 4-Pin Flat Trailer End Connector - 11 foot - 54000026

    $52.29
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  • 7-WAY FIFTH WHEEL ADAPTER HARNESS (TOW READY) - 20111

    Fulton

    7-WAY FIFTH WHEEL ADAPTER HARNESS (TOW READY) - 20111

    $191.19
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  • Pollak Corp - 7-WAY HARNESS ADAPTER,7-WAY RV HARNESS ADAPTER - 11933

    POLLAK CORP

    Pollak Corp - 7-WAY HARNESS ADAPTER,7-WAY RV HARNESS ADAPTER - 11933

    $47.07
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  • Sea Choice - 7Way Round to 5Way Flat Adapter With Lead - 52981

    SEACHOICE

    Sea Choice - 7Way Round to 5Way Flat Adapter With Lead - 52981

    $17.24
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  • Seachoice - 7 Way Trailer Connector - 13881

    SEACHOICE

    Seachoice - 7 Way Trailer Connector - 13881

    $19.64 $21.99
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  • Seachoice - 7 Way Trailer Connector - 13831

    SEACHOICE

    Seachoice - 7 Way Trailer Connector - 13831

    $18.21 $20.99
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  • Seachoice - 7 Way Trailer Connector - 13821

    SEACHOICE

    Seachoice - 7 Way Trailer Connector - 13821

    $19.79
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  • 7-WAY ADAPTER (FULTYME RV) - 1000

    FULTYME RV

    7-WAY ADAPTER (FULTYME RV) - 1000

    $17.85 $19.99
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  • Seachoice - 7 Way Trailer Connector - 13811

    SEACHOICE

    Seachoice - 7 Way Trailer Connector - 13811

    $19.28 $21.99
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  • 7-WAY ADAPTER (FULTYME RV) - 1001

    FULTYME RV

    7-WAY ADAPTER (FULTYME RV) - 1001

    $18.29
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  • 7-WAY ADAPTER (FULTYME RV) - 1007

    FULTYME RV

    7-WAY ADAPTER (FULTYME RV) - 1007

    $18.21 $20.99
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  • 7-WAY ADAPTER (FULTYME RV) - 1002

    FULTYME RV

    7-WAY ADAPTER (FULTYME RV) - 1002

    $16.85 $18.79
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  • Wesbar - 7-Way Flat Pin to 5-Flat Adapter w/LED Lamp - Out By-Pass for European Vehicles - 20141

    Wesbar

    Wesbar - 7-Way Flat Pin to 5-Flat Adapter w/LED Lamp - Out By-Pass for European Vehicles - 20141

    $22.81
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  • Sea Choice - 7Way Round USCar Style TwistLock ConnectorCar Side, TwistLock - 57941

    SEACHOICE

    Sea Choice - 7Way Round USCar Style TwistLock ConnectorCar Side, TwistLock - 57941

    $11.02
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  • Sea Choice - 7Way Round USCar Style ConnectorCar Side, Heavy Duty - 57861

    SEACHOICE

    Sea Choice - 7Way Round USCar Style ConnectorCar Side, Heavy Duty - 57861

    $7.23
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  • Optronics - Optronics A57WBP 7-Way Round Blade to 5-Way Flat Pin Connector Adapter 16" Cable - A57WBP

    OPTRONICS

    Optronics - Optronics A57WBP 7-Way Round Blade to 5-Way Flat Pin Connector Adapter 16" Cable - A57WBP

    $20.50
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  • Pollak Corp - 7-4 WAY ADAPTER,7-WAY TO 4 WAY CONNECTOR ADAPTER - 12716EP

    POLLAK CORP

    Pollak Corp - 7-4 WAY ADAPTER,7-WAY TO 4 WAY CONNECTOR ADAPTER - 12716EP

    $8.79
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  • Pollak Corp - 7-5 WAY ADAPTER,7-WAY TO 5 WAY CONNECTOR ADAPTER - 12718EP

    POLLAK CORP

    Pollak Corp - 7-5 WAY ADAPTER,7-WAY TO 5 WAY CONNECTOR ADAPTER - 12718EP

    $14.05
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  • Pollak Corp - 7WAY RV TO 5WAY FLAT ADAPTER,7-WAY RV TO 5-WAY FLAT ADAPTER - 12744EV

    POLLAK CORP

    Pollak Corp - 7WAY RV TO 5WAY FLAT ADAPTER,7-WAY RV TO 5-WAY FLAT ADAPTER - 12744EV

    $15.69
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  • TRAILER CONNECTOR (FULTYME RV) - 1012

    FULTYME RV

    TRAILER CONNECTOR (FULTYME RV) - 1012

    $8.55
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  • TRAILER CONNECTOR (FULTYME RV) - 1013

    FULTYME RV

    TRAILER CONNECTOR (FULTYME RV) - 1013

    $7.29
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  • Seachoice - 48" Trailer Wire Harness Extension - 13991

    SEACHOICE

    Seachoice - 48" Trailer Wire Harness Extension - 13991

    $12.31
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  • Seachoice - 48" Trailer Wire Harness Extension - 13931

    SEACHOICE

    Seachoice - 48" Trailer Wire Harness Extension - 13931

    $15.23
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  • Sea Choice - 4 Flat to 5 Flat Trailer Wiring Adapter - 57721

    SEACHOICE

    Sea Choice - 4 Flat to 5 Flat Trailer Wiring Adapter - 57721

    $10.73 $12.19
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  • 6-WAY ROUND TO 4-FLAT ADAPTER (FULTYME) - 2004

    FULTYME RV

    6-WAY ROUND TO 4-FLAT ADAPTER (FULTYME) - 2004

    $9.85 $10.99
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  • Sea Choice - 7Way RV Style Connector to 6Way Round and 5Way Flat Adapter - 58101

    SEACHOICE

    Sea Choice - 7Way RV Style Connector to 6Way Round and 5Way Flat Adapter - 58101

    $20.90 $21.55
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  • 7-WAY BLADE TO 4-FLAT ADAPTER WITH LED COVER (FULTYME) - 2005

    FULTYME RV

    7-WAY BLADE TO 4-FLAT ADAPTER WITH LED COVER (FULTYME) - 2005

    $9.71 $10.99
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  • Sea Choice - 6 Way Round to 4 Flat Trailer Wiring Adapter - 57731

    SEACHOICE

    Sea Choice - 6 Way Round to 4 Flat Trailer Wiring Adapter - 57731

    $10.67 $11.99
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  • 7-WAY BLADE TO 6-WAY ROUND AND 5-WAY FLAT ADAPTER (FULTYME) - 2033

    FULTYME RV

    7-WAY BLADE TO 6-WAY ROUND AND 5-WAY FLAT ADAPTER (FULTYME) - 2033

    $28.60
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  • TRAILER WIRING MOUNTING BRACKET (FULTYME) - 2027

    FULTYME RV

    TRAILER WIRING MOUNTING BRACKET (FULTYME) - 2027

    $6.55
    Learn More

PartsVu offers a full range of Boat Trailer Parts and Accessories to help you maintain your trailer. Follow these links to find: Boat Trailer Lights; Boat Trailer Bow Rollers & Stops; Trailer Adapters & Wiring Harnesses; Boat Trailer Jacks; Boat Trailer Hubs, Brakes & Bearings; Boat Trailer Balls & Couplers; Boat Trailer Hitches; Boat Trailer Accessories, Chocks & Tires; Boat Trailer Hardware, Brackets, Springs & Bolts; Boat Trailer Guides & Poles; Boat Trailer Bunk, Boards & Components; Boat Trailer Straps, Winches & Safety Chains.

Everything you need to know about wiring a Boat Trailer is featured in this article from the PartsVU Exchange.

Here's some great information about how to secure your boat trailer safely for the ride home.

Check out all of the great Boat Trailering Tips & Resources available at the PartsVU Exchange.