Trailer Wiring Harness & Components

Trailer Wiring Harness & Parts

  • Truck-Lite® - 10 Series Round Grommet Mount Grommets for 10 Series Round Lights
    Truck-Lite®10 Series Round Grommet Mount Grommets for 10 Series Round Lights
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    # 2008362032
    Universal 10 Series Round Grommet Mount Grommets for 10 Series Round Lights by Truck-Lite®. Want to raise your trailer's visibility? This Truck-Lite product just fits the bill. Made from top-quality materials, it is resistant to dents,...
    1-year warranty
    $5.46 - $9.03
  • Truck-Lite® - 60 Series Bolt-on Mount Mounting Brackets for 60 Series Oval Lights
    Truck-Lite®60 Series Bolt-on Mount Mounting Brackets for 60 Series Oval Lights
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    # 2008361923
    Universal 60 Series Bolt-on Mount Mounting Brackets for 60 Series Oval Lights by Truck-Lite®. Want to raise your trailer's visibility? This Truck-Lite product just fits the bill. Made from top-quality materials, it is resistant to...
    1-year warranty
    $15.08 - $65.85
  • Truck-Lite® - 10 Series Bolt-on Mount Mounting Brackets for 10 Series Round Lights
    Truck-Lite®10 Series Bolt-on Mount Mounting Brackets for 10 Series Round Lights
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    # 2008361578
    Universal 10 Series Bolt-on Mount Mounting Brackets for 10 Series Round Lights by Truck-Lite®. Polycarbonate. Want to raise your trailer's visibility? This Truck-Lite product just fits the bill. Made from top-quality materials, it is...
    High-impact plastic mountBranch deflector cams-on 2 and 2 1/2" lights
    $7.29 - $9.65
  • Truck-Lite® - Round Bolt-on Mount Flange Covers
    Truck-Lite®Round Bolt-on Mount Flange Covers
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    # 4872062576
    Universal Round Bolt-on Mount Flange Covers by Truck-Lite®. Stainless Steel. Want to raise your trailer's visibility? This Truck-Lite product just fits the bill. Made from top-quality materials, it is resistant to dents, chips, and...
    Designed to enhance the appearance of lightsFlange cover offers improved theft resistance
    $10.34 - $22.67
  • Truck-Lite® - Snap-in Mount Light Plugs
    Truck-Lite®Snap-in Mount Light Plugs
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    # 2008361988
    Universal Snap-in Mount Light Plugs by Truck-Lite®. Want to raise your trailer's visibility? This Truck-Lite product just fits the bill. Made from top-quality materials, it is resistant to dents, chips, and fading. The product ensures...
    For use with Super 21 incandescent lights16 gauge GPT wire, tin plated brass terminals
    $5.58 - $6.24
  • Truck-Lite® - 10 Series Bolt-on Mount Mounting Brackets for 10 Series Round Lights
    Truck-Lite®10 Series Bolt-on Mount Mounting Brackets for 10 Series Round Lights
    0
    # 4872062577
    Universal 10 Series Bolt-on Mount Mounting Brackets for 10 Series Round Lights by Truck-Lite®. Steel. Want to raise your trailer's visibility? This Truck-Lite product just fits the bill. Made from top-quality materials, it is resistant...
    Black epoxy painted heavy gauge steelDesigned to deliver trouble-free, consistent performance
    $11.23 - $11.28
  • Truck-Lite® - 10 Series Round Grommet Mount Grommet Covers for 10 Series Round Lights
    Truck-Lite®10 Series Round Grommet Mount Grommet Covers for 10 Series Round Lights
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    # 4639520853
    Universal 10 Series Round Grommet Mount Grommet Covers for 10 Series Round Lights by Truck-Lite®. Plastic. Want to raise your trailer's visibility? This Truck-Lite product just fits the bill. Made from top-quality materials, it is...
    Designed to enhance appearance of lightsFlange cover offers improved theft resistance
    $9.81 - $10.52
  • Truck-Lite® - 12 Series Bolt-on Mount Mounting Brackets for 12 Series Rectangular Lights
    Truck-Lite®12 Series Bolt-on Mount Mounting Brackets for 12 Series Rectangular Lights
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    # 4872066608
    Universal 12 Series Bolt-on Mount Mounting Brackets for 12 Series Rectangular Lights by Truck-Lite®. ABS. Want to raise your trailer's visibility? This Truck-Lite product just fits the bill. Made from top-quality materials, it is...
    High-impact plastic branch deflector mountSnap-in light design for easy replacement
    $6.76 - $8.07
  • Truck-Lite® - 15 Series Bolt-on Mount Branch Deflector Mounts for 15 Series Rectangular Lights
    Truck-Lite®15 Series Bolt-on Mount Branch Deflector Mounts for 15 Series Rectangular Lights
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    # 2008361977
    Universal 15 Series Bolt-on Mount Branch Deflector Mounts for 15 Series Rectangular Lights by Truck-Lite®. ABS. Want to raise your trailer's visibility? This Truck-Lite product just fits the bill. Made from top-quality materials, it is...
    High-impact plastic constructionEasy Snap-On light installation
    $10.24 - $10.34
  • Truck-Lite® - 15 Series Bolt-on Mount Mounting Brackets for 15 Series Rectangular Lights
    Truck-Lite®15 Series Bolt-on Mount Mounting Brackets for 15 Series Rectangular Lights
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    # 4344791962
    Universal 15 Series Bolt-on Mount Mounting Brackets for 15 Series Rectangular Lights by Truck-Lite®. Want to raise your trailer's visibility? This Truck-Lite product just fits the bill. Made from top-quality materials, it is resistant...
    1-year warranty
    $9.24 - $12.95
  • Truck-Lite® - 15 Series Surface Mount Mounting Brackets for 15 Series Rectangular Lights
    Truck-Lite®15 Series Surface Mount Mounting Brackets for 15 Series Rectangular Lights
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    # 4344794537
    Universal 15 Series Surface Mount Mounting Brackets for 15 Series Rectangular Lights by Truck-Lite®. ABS. Want to raise your trailer's visibility? This Truck-Lite product just fits the bill. Made from top-quality materials, it is...
    Extra strength plastic constructionEasy snap-in light installation
    $6.78 - $9.31
  • Truck-Lite® - 19 Series Bolt-on Mount Mounting Brackets for 19 Series Rectangular Lights
    Truck-Lite®19 Series Bolt-on Mount Mounting Brackets for 19 Series Rectangular Lights
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    # 2008361618
    Universal 19 Series Bolt-on Mount Mounting Brackets for 19 Series Rectangular Lights by Truck-Lite®. Want to raise your trailer's visibility? This Truck-Lite product just fits the bill. Made from top-quality materials, it is resistant...
    Features unique plug-in design for ease of installationLow-profile, extra-strength base
    $6.44 - $10.83
  • Truck-Lite® - 19 Series Radius Bolt-on Mount Mounting Bases for 19 Series Rectangular Lights
    Truck-Lite®19 Series Radius Bolt-on Mount Mounting Bases for 19 Series Rectangular Lights
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    # 4872062590
    Universal 19 Series Radius Bolt-on Mount Mounting Bases for 19 Series Rectangular Lights by Truck-Lite®. Polycarbonate. Want to raise your trailer's visibility? This Truck-Lite product just fits the bill. Made from top-quality...
    Low-profile, extra-strength base1-year warranty
    $8.47 - $10.52
  • Truck-Lite® - 30 Series Deflector Bolt-on Mount Mounting Brackets for 30 Series Round Lights
    Truck-Lite®30 Series Deflector Bolt-on Mount Mounting Brackets for 30 Series Round Lights
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    # 2008361998
    Universal 30 Series Deflector Bolt-on Mount Mounting Brackets for 30 Series Round Lights by Truck-Lite®. Polycarbonate. Want to raise your trailer's visibility? This Truck-Lite product just fits the bill. Made from top-quality...
    1-year warranty
    $8.80 - $12.94
  • Truck-Lite® - 30 Series Round Grommet Mount Grommets for 30 Series Round Lights
    Truck-Lite®30 Series Round Grommet Mount Grommets for 30 Series Round Lights
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    # 2008361543
    Universal 30 Series Round Grommet Mount Grommets for 30 Series Round Lights by Truck-Lite®. PVC. Want to raise your trailer's visibility? This Truck-Lite product just fits the bill. Made from top-quality materials, it is resistant to...
    Flush mounts 2" diameter lightsWide groove for panel thickness up to 250"
    $4.92 - $8.31
  • Truck-Lite® - 33 Series Flange Mount Flange Mounts for 33 Series Round Lights
    Truck-Lite®33 Series Flange Mount Flange Mounts for 33 Series Round Lights
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    # 4872065606
    Universal 33 Series Flange Mount Flange Mounts for 33 Series Round Lights by Truck-Lite®. Nylon. Want to raise your trailer's visibility? This Truck-Lite product just fits the bill. Made from top-quality materials, it is resistant to...
    Flush Mounts, 0.75" diameter lights to vehicle with snap fit, no screws requiredSealing grommets secure lights to vehicle, while assuring a 999 percent leak-proof seal
    $5.60 - $5.94
  • Truck-Lite® - 36 Series Bolt-on Mount Mounting Brackets for 36 Series Rectangular Lights
    Truck-Lite®36 Series Bolt-on Mount Mounting Brackets for 36 Series Rectangular Lights
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    # 2008361624
    Universal 36 Series Bolt-on Mount Mounting Brackets for 36 Series Rectangular Lights by Truck-Lite®. ABS. Want to raise your trailer's visibility? This Truck-Lite product just fits the bill. Made from top-quality materials, it is...
    Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
    $6.90 - $7.29
  • Truck-Lite® - 40 Series Bolt-on Mount Mounting Brackets for 40 Series Round Lights
    Truck-Lite®40 Series Bolt-on Mount Mounting Brackets for 40 Series Round Lights
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    # 2008361602
    Universal 40 Series Bolt-on Mount Mounting Brackets for 40 Series Round Lights by Truck-Lite®. Steel. Want to raise your trailer's visibility? This Truck-Lite product just fits the bill. Made from top-quality materials, it is resistant...
    Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
    $15.02 - $31.09
  • Truck-Lite® - 40 Series Round Grommet Mount Grommets for 40 Series Round Lights
    Truck-Lite®40 Series Round Grommet Mount Grommets for 40 Series Round Lights
    0
    # 4639524850
    Universal 40 Series Round Grommet Mount Grommets for 40 Series Round Lights by Truck-Lite®. PVC. Want to raise your trailer's visibility? This Truck-Lite product just fits the bill. Made from top-quality materials, it is resistant to...
    Flush mounts 4" diameter lights in a 4.5" holeDesigned to provide additional shock absorbency to extend light life
    $6.13 - $8.32
  • Truck-Lite® - 60 Series Oval Grommet Mount Grommets for 60 Series Oval Lights
    Truck-Lite®60 Series Oval Grommet Mount Grommets for 60 Series Oval Lights
    0
    # 2008361925
    Universal 60 Series Oval Grommet Mount Grommets for 60 Series Oval Lights by Truck-Lite®. PVC. Want to raise your trailer's visibility? This Truck-Lite product just fits the bill. Made from top-quality materials, it is resistant to...
    Flush mounts the 60 Series lightsProvides lights with additional shock absorbency to extend light life
    $6.47 - $10.48
  • Truck-Lite® - Bolt-on Mount Mounting Brackets for 15 Series Rectangular Lights
    Truck-Lite®Bolt-on Mount Mounting Brackets for 15 Series Rectangular Lights
    0
    # 2008361970
    Universal Bolt-on Mount Mounting Brackets for 15 Series Rectangular Lights by Truck-Lite®. ABS. Want to raise your trailer's visibility? This Truck-Lite product just fits the bill. Made from top-quality materials, it is resistant to...
    Stylish design for contemporary lookSure contact, self-grounding feature
    $6.97 - $9.65
  • Truck-Lite® - Rectangular Grommet Mount Gaskets
    Truck-Lite®Rectangular Grommet Mount Gaskets
    0
    # 4872063582
    Universal Rectangular Grommet Mount Gaskets by Truck-Lite®. Want to raise your trailer's visibility? This Truck-Lite product just fits the bill. Made from top-quality materials, it is resistant to dents, chips, and fading. The product...
    1-year warranty
    $4.67 - $6.18
  • Truck-Lite® - Rectangular Grommet Mount Gaskets for 21 Series Rectangular Lights
    Truck-Lite®Rectangular Grommet Mount Gaskets for 21 Series Rectangular Lights
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    # 4872065591
    Universal Rectangular Grommet Mount Gaskets for 21 Series Rectangular Lights by Truck-Lite®. Foam. Want to raise your trailer's visibility? This Truck-Lite product just fits the bill. Made from top-quality materials, it is resistant to...
    Suitable for PC requirements on a 45-degree angle with additional reflectorsOptional gaskets available to improve seal between lamp and body
    $5.67 - $5.87
  • Truck-Lite® - Rectangular Grommet Mount Gaskets for 35 Series Rectangular Lights
    Truck-Lite®Rectangular Grommet Mount Gaskets for 35 Series Rectangular Lights
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    # 4872066569
    Universal Rectangular Grommet Mount Gaskets for 35 Series Rectangular Lights by Truck-Lite®. Foam. Want to raise your trailer's visibility? This Truck-Lite product just fits the bill. Made from top-quality materials, it is resistant to...
    Slim 0.75" wide design makes light perfect solution for narrow rail designsMust be mounted horizontally
    $5.72 - $6.03
  • Truck-Lite® - Signal-Stat Series Round Grommet Mount O-Rings for Signal-Stat Round Lights
    Truck-Lite®Signal-Stat Series Round Grommet Mount O-Rings for Signal-Stat Round Lights
    0
    # 4872062599
    Universal Signal-Stat Series Round Grommet Mount O-Rings for Signal-Stat Round Lights by Truck-Lite®. Rubber. Want to raise your trailer's visibility? This Truck-Lite product just fits the bill. Made from top-quality materials, it is...
    Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
    $7.38 - $8.32
  • Truck-Lite® - Snap-in Mount Light Plugs for 19 Series Lights
    Truck-Lite®Snap-in Mount Light Plugs for 19 Series Lights
    0
    # 4872067583
    Universal Snap-in Mount Light Plugs for 19 Series Lights by Truck-Lite®. Want to raise your trailer's visibility? This Truck-Lite product just fits the bill. Made from top-quality materials, it is resistant to dents, chips, and fading....
    For use with Model 19 incandescent lights16 gauge GPT wire
    $4.89 - $8.13
  • Truck-Lite® - Twist Bulb Sockets
    Truck-Lite®Twist Bulb Sockets
    0
    # 3248919101
    Universal Twist Bulb Sockets by Truck-Lite®. This product is made from high-grade materials to meet the strictest standards of high quality. Designed with the utmost care and attention to detail, this Truck-Lite product ensures superior...
    Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
    $7.55 - $11.04
  • Buyers® - DOT Light Plug
    Buyers®DOT Light Plug
    0
    # 4153695892
    Universal DOT Light Plug by Buyers®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from industry-leading...
    High quality at an affordable priceExpertly made from premium materials
    $10.49 - $12.97
  • Buyers® - Dual Oval Light Box
    Buyers®Dual Oval Light Box
    0
    # 3248925106
    Universal Dual Oval Light Box by Buyers®. 1 Piece. This product is made of high-quality materials to serve you for years to come. This product designed using state-of-the-art technology and with customers in mind. It will meet your...
    Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
    $59.68 - $98.63
  • Buyers® - Light Box
    Buyers®Light Box
    0
    # 4153696080
    Universal Light Box by Buyers®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from industry-leading...
    High quality at an affordable priceExpertly made from premium materials
    $35.58 - $143.70




Trailer tail lights, brake lights, and turn signals are one of the most important safety accessories that are required by law. Without these lights, other drivers and pedestrians will have a hard time noticing your trailer and understanding your maneuvers. This is because the trailer you're pulling is usually wide enough to obscure your vehicle's lights. Trailer lights are designed to perform the same functions as your vehicle's lights. They help other road users notice your trailer in time and warn them that you are turning, stopping, changing directions or lanes, etc. So if you want to avoid collisions, make sure your trailer lights are in top condition.

Trailer lights tend to take a beating. They burn out over time or corrode when exposed to harsh elements. You can also damage them when loading and unloading your cargo. However, the most common issues with trailer lights are faulty wiring harnesses and connectors, loose and frayed wire connections, etc. Need high-quality electrical accessories to restore the operation of your trailer lights? Choose from our selection of premium wiring harnesses, connectors, lighting modules, and other related products. The electrical accessories stocked in our online store also come in handy when equipping your trailer with new lights.

As a rule, trailer wiring consists of a plug connected to the vehicle's lighting circuit, a connector on the trailer that matches the plug, and a wiring harness that runs along the trailer's frame. On our website, you'll find all these accessories and many more. No matter whether you're upgrading to LED tail lights, installing tow lights, or anything in between, we have everything you need to make wiring easy. We offer wiring harnesses and connectors from the most trusted manufacturers in the industry to guarantee they deliver exceptional quality and dependability. Made using heavy-duty materials and up-to-date equipment, they are durable enough to withstand high temperatures, vibration, and other demanding conditions.

Depending on the functions you need, you can choose from connectors with four to seven pins. Standard 4-way connectors are ideal for the basic hookup. They are designed to ensure reliable transfer of power to the trailer tail lights, brake lights and turn signals, and feature one pin for the ground wire. This type of connectors is used mostly on lightweight trailers that are not equipped with brakes or other accessories that require power. However, trailers with a capacity of more than 3,000 lbs have brakes, so they require a connector with at least 5 pins. 5-Way connectors are very similar to 4-way connectors but have an additional pin that provides power to actuate electric brakes or disable hydraulic brakes.

6-Way connectors also allow you to hook up three basic trailer lights and have a ground pin. Two other pins are usually used for electric brakes and 12V hot lead. 7-Way connectors are the most widespread connector type since they are found on most modern pickups, SUVs, and vans. They provide all the functions of the 6-way connectors while also having an additional pin for the back-up lights. With so many different types of connectors, chances are the connector on your vehicle will differ from the one on your trailer. In this case, you need an adapter that will help create a connection between two different connector types. Also, keep in mind that sometimes with an adapter you may need additional wiring.

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Trailer Wiring Harness & Components Reviews

2 reviews
4.8 of 5
License Plate Bracket
Wesbar® - Light Bracket
I don't know what you can say about a piece of plastic other than to say that it fit as it should and I've had no issues. It was sent quickly and arrived undamaged.
Posted by Jacqueline (Carlsbad, CA) / October 13, 20122005 Chrysler Voyager
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