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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 - 4-Way Flat Wiring Connector - Trailer End - 18 inch Wishbone Harness - 18 inch Ground Wire - 707286

    Wesbar

    Wesbar - 4-Way Flat Wiring Connector - Trailer End - 18 inch Wishbone Harness - 18 inch Ground Wire - 707286

    $17.17
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  • Wesbar - 5-Flat Connector Harness - Trailer End - 702405

    Wesbar

    Wesbar - 5-Flat Connector Harness - Trailer End - 702405

    $16.67
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  • Boating Essentials - Trailer Circuit Tester - BE-TR-59391-DP

    T-H MARINE

    Boating Essentials - Trailer Circuit Tester - BE-TR-59391-DP

    $5.59
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  • 4-FLAT TO 5-FLAT TRAILER WIRING ADAPTER (FULTYME) - 2003

    FULTYME RV

    4-FLAT TO 5-FLAT TRAILER WIRING ADAPTER (FULTYME) - 2003

    $13.48 $15.99
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  • Forespar - Lanocote Rust & Corrosion Solution - 16 oz. - 770003

    Forespar Performance Products

    Forespar - Lanocote Rust & Corrosion Solution - 16 oz. - 770003

    $34.93 $36.45
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  • Wesbar - Wishbone Trailer Wiring Kit - 4 Way - 25 foot 707103

    Wesbar

    Wesbar - Wishbone Trailer Wiring Kit - 4 Way - 25 foot 707103

    $61.97 $72.59
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  • Anderson Marine - 4-Way Trailer Harness Kit 25' - V5425Y

    ANDERSON

    Anderson Marine - 4-Way Trailer Harness Kit 25' - V5425Y

    $32.35
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  • Sea Choice - 4Way Wishbone Style Wiring Harness 25' - 52961

    SEACHOICE

    Sea Choice - 4Way Wishbone Style Wiring Harness 25' - 52961

    $19.69
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  • Sea Choice - 7Way Trailer Wiring 8' Cable With 7Way Molded Connector - 58111

    SEACHOICE

    Sea Choice - 7Way Trailer Wiring 8' Cable With 7Way Molded Connector - 58111

    $60.78
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  • Attwood Marine - Wiring Harness/Connector 4-Way Flat, 18" Plug and 48" Socket - 76635

    Attwood Marine

    Attwood Marine - Wiring Harness/Connector 4-Way Flat, 18" Plug and 48" Socket - 76635

    $9.19 $9.99
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  • Anderson Marine - 4 Way Flat Tester - V5411

    ANDERSON

    Anderson Marine - 4 Way Flat Tester - V5411

    $6.93
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  • 7-WAY ROUND TO 5-WAY FLAT ROUND ADAPTER (OPTRONICS) - A75TBP

    OPTRONICS

    7-WAY ROUND TO 5-WAY FLAT ROUND ADAPTER (OPTRONICS) - A75TBP

    $15.95
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  • Sierra - Pigtail 1' Male - TC44054

    SIERRA

    Sierra - Pigtail 1' Male - TC44054

    $7.83 $9.19
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  • Pollak Corp - 7WAY RV TRAILER CIRCUIT TESTER,7-WAY RV TRAILER CIRCUIT TESTER - 12741EV

    POLLAK CORP

    Pollak Corp - 7WAY RV TRAILER CIRCUIT TESTER,7-WAY RV TRAILER CIRCUIT TESTER - 12741EV

    $49.52
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  • Anderson Marine - 7-To-5-Way Harness Adapter - E5415

    ANDERSON

    Anderson Marine - 7-To-5-Way Harness Adapter - E5415

    $21.59
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  • Anderson Marine - 7-To-4-Way Harness Adapter - E5414

    ANDERSON

    Anderson Marine - 7-To-4-Way Harness Adapter - E5414

    $16.57
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  • Anderson Marine - Peterson 7 To 60Way Harness Adapter - V5417

    ANDERSON

    Anderson Marine - Peterson 7 To 60Way Harness Adapter - V5417

    $16.76
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  • Pollak Corp - 7WAY PIN PLUG TO 7WAY RV SOCKE,7-WAY PIN PLUG TO 7-WAY RV SOCKET - 12724EP

    POLLAK CORP

    Pollak Corp - 7WAY PIN PLUG TO 7WAY RV SOCKE,7-WAY PIN PLUG TO 7-WAY RV SOCKET - 12724EP

    $41.21
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  • Pollak Corp - 4WAY FLAT TO 7WAY RV SOCKET AD,4-WAY FLAT TO 7-WAY RV SOCKET ADAPTER - 12723EP

    POLLAK CORP

    Pollak Corp - 4WAY FLAT TO 7WAY RV SOCKET AD,4-WAY FLAT TO 7-WAY RV SOCKET ADAPTER - 12723EP

    $27.43
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  • Pollak Corp - 6WAY ROUND PLUG TO 7WAY SOCKET,6-WAY ROUND PLUG TO 7-WAY SOCKET - 12725EP

    POLLAK CORP

    Pollak Corp - 6WAY ROUND PLUG TO 7WAY SOCKET,6-WAY ROUND PLUG TO 7-WAY SOCKET - 12725EP

    $29.43
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  • 2-WAY FLAT CONNECTOR (ANCOR) - 249102

    Ancor

    2-WAY FLAT CONNECTOR (ANCOR) - 249102

    $4.17 $6.49
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  • Sea Choice - 4Way Flat Connector Cover - 58121

    SEACHOICE

    Sea Choice - 4Way Flat Connector Cover - 58121

    $4.83
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  • FLAT CONNECTOR COVER (FULTYME) - 2018

    FULTYME RV

    FLAT CONNECTOR COVER (FULTYME) - 2018

    $1.60 $1.99
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  • Sea Choice - 5Way Flat Connector Cover - 57951

    SEACHOICE

    Sea Choice - 5Way Flat Connector Cover - 57951

    $1.23
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  • FLAT CONNECTOR COVER (FULTYME) - 2035

    FULTYME RV

    FLAT CONNECTOR COVER (FULTYME) - 2035

    $6.26
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  • Sea Choice - 4Way Flat Connector 12"Trailer Side - 57851

    SEACHOICE

    Sea Choice - 4Way Flat Connector 12"Trailer Side - 57851

    $7.66 $7.99
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  • Sea Choice - 4Way Flat Trailer Harness 48"Car Side for 2Wire Systems - 57841

    SEACHOICE

    Sea Choice - 4Way Flat Trailer Harness 48"Car Side for 2Wire Systems - 57841

    $8.52
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  • Sea Choice - 4Way Flat Trailer Harness 24"Trailer Side With Separate Tail Light Wires - 57971

    SEACHOICE

    Sea Choice - 4Way Flat Trailer Harness 24"Trailer Side With Separate Tail Light Wires - 57971

    $9.16
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  • Sea Choice - 4Way Flat Trailer Harness 60"Car and Trailer Side Loop - 57931

    SEACHOICE

    Sea Choice - 4Way Flat Trailer Harness 60"Car and Trailer Side Loop - 57931

    $13.60
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  • 4-WAY FLAT CONNECTORS (FULTYME) - 2020

    FULTYME RV

    4-WAY FLAT CONNECTORS (FULTYME) - 2020

    $8.55
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  • Sea Choice - 4Way Flat Trailer Harness 48"Trailer Side - 57901

    SEACHOICE

    Sea Choice - 4Way Flat Trailer Harness 48"Trailer Side - 57901

    $8.85 $8.99
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  • 4-WAY FLAT CONNECTORS (FULTYME) - 2007

    FULTYME RV

    4-WAY FLAT CONNECTORS (FULTYME) - 2007

    $7.90 $7.99
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  • 4-WAY FLAT CONNECTORS (FULTYME) - 2016

    FULTYME RV

    4-WAY FLAT CONNECTORS (FULTYME) - 2016

    $12.60
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  • Sea Choice - 5Way Flat Connector60" - 57961

    SEACHOICE

    Sea Choice - 5Way Flat Connector60" - 57961

    $11.66
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  • 4-WAY FLAT CONNECTORS (FULTYME) - 2013

    FULTYME RV

    4-WAY FLAT CONNECTORS (FULTYME) - 2013

    $8.21
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  • 4-WAY FLAT CONNECTORS (FULTYME) - 2008

    FULTYME RV

    4-WAY FLAT CONNECTORS (FULTYME) - 2008

    $7.05
    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.