Trailer Wire Harness

When you're hauling and towing gear, you need specialized equipment that gets the job done. 4 Wheel Parts is your best source for trailer and towing accessories, including critical electrical components like your trailer wire harness. Our inventory includes both full harnesses and flat-plug loops sourced from industry-leading manufacturers. 

What Are Trailer Wire Harness Common Pros and Cons?
Whether you're a new 4x4 enthusiast or an experienced off-roader, common sense tells you that you can't just slap a trailer onto your vehicle's hitch and go. Safe driving practices dictate proper lighting on your trailer, either as OEM or aftermarket lights mounted onto the rear � and that lighting needs functional wiring to work. Wiring harnesses work by plugging into your OEM wiring harness, allowing you to operate the trailer's brake and tail lights with your vehicle's controls. 

Which Trailer Wire Harness Are Best?
Your towing harness has two primary functions: linking your trailer to your vehicle's electrical system and receiving signals to activate its lights. With products from brands like Smittybilt, Rugged Ridge and Tow Ready, you enjoy unwavering high quality and dependable performance. Enjoy reliability and ease of installation with their wiring harnesses and accessories: Thanks to plug-and-play installation, there's no guesswork or uncertainty. Just hook up the wiring, test it and you're ready to go. Locate the exact parts you need by using our category filters on each landing page. 

How Much Do Trailer Wire Harnesses Cost?
Trailer wiring harness parts and accessories require only a small investment, While they can cost between $7 for a flat plug loop and $135 for a complete fifth-wheel adapter harness, most basic wiring harnesses are priced between $20 and $40. We offer these electrical components at everyday low prices with our 100% Price Match Guarantee. Save even more with free local store pickup or choose free ground shipping on orders of $99 or more. 

Trailer Wire Harness

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    Rugged Ridge Tow Wire Harnesses

    Rugged Ridge Tow Wire Harness

    From $139.99

    4.7 4.7 (10)

    Tow Ready Fifth Wheel Adapter Harnesses

    Tow Ready Fifth Wheel Adapter Harness

    From $144.99

    Tow Ready 4-Flat Plug Loops

    Tow Ready 4-Flat Plug Loop

    From $11.99

    Tow Ready 5-Flat Plug Loops

    Tow Ready 5-Flat Plug Loop

    From $13.99

    RT Off-Road Trailer Wiring Harnesses

    RT Off-Road Trailer Wiring Harness

    From $55.99

    Weather Guard Trailer Hitch Wiring Harnesses

    Weather Guard Trailer Hitch Wiring Harnesses

    From $89.99

    Tow Ready Replacement OEM Tow Package Wiring Harnesses

    Tow Ready Replacement OEM Tow Package Wiring Harness

    From $16.99

    5.0 5.0 (4)

    Tow Ready 7-Way Tow Package Wiring Harnesses

    Tow Ready 7-Way Tow Package Wiring Harness

    From $74.99

    Tow Ready OEM Wiring Harnesses

    Tow Ready OEM Wiring Harness

    From $103.99

    Tow Ready ModuLite Wiring Kits

    Tow Ready ModuLite Wiring Kit

    From $17.99

    Tow Ready 5-Flat Wiring Harnesses

    Tow Ready 5-Flat Wiring Harness

    From $10.99

    Painless Wiring Universal Trailer Wiring Pigtails

    Painless Wiring Universal Trailer Wiring Pigtails

    From $38.11

    DrawTite 5th Wheel Wire Harnesses

    DrawTite 5th Wheel Wire Harness

    From $100.99

    JW Speaker Trailer Wire Harnesses

    JW Speaker Trailer Wire Harnesses

    From $29.38

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    $39.99

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