Trailer Wiring Harness & Parts
- Truck-Lite®14 Series Rectangular Grommet Mount Grommet for 14 Series Rectangular Lights (14701)Universal 14 Series Rectangular Grommet Mount Grommet for 14 Series Rectangular 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...Sonically sealed lens and housingFeatures snap-in light with reflector$6.04
- Truck-Lite®15 Series Bolt-on Mount Branch Deflector Mount for 15 Series Rectangular Lights (15720)Universal 15 Series Bolt-on Mount Branch Deflector Mount for 15 Series Rectangular Lights (15720) by Truck-Lite®. ABS. Want to raise your trailer's visibility? This Truck-Lite product just fits the bill. Made from top-quality materials,...High-impact plastic constructionEasy Snap-On light installation$10.30
- Truck-Lite®15 Series Bolt-on Mount Branch Deflector Mount for 15 Series Rectangular Lights (15401)Universal 15 Series Bolt-on Mount Branch Deflector Mount for 15 Series Rectangular Lights (15401) by Truck-Lite®. ABS. Want to raise your trailer's visibility? This Truck-Lite product just fits the bill. Made from top-quality materials,...High-impact plastic constructionEasy Snap-On light installation$10.40
- Truck-Lite®15 Series Bolt-on Mount Mounting Bracket for 15 Series Rectangular Lights (15731)Universal 15 Series Bolt-on Mount Mounting Bracket for 15 Series Rectangular Lights by Truck-Lite®. ABS. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with...Designed for use on most utility trailer fendersWire cover is marked in 1/2'' increments for easy modifications$4.88
- Truck-Lite®15 Series Bolt-on Mount Mounting Bracket for 15 Series Rectangular Lights (15406)Universal 15 Series Bolt-on Mount Mounting Bracket for 15 Series Rectangular Lights (15406) 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...Stylish design for contemporary lookSure contact, self-grounding feature$12.76
- Truck-Lite®15 Series Bolt-on Mount Mounting Bracket for 15 Series Rectangular Lights (15730)Universal 15 Series Bolt-on Mount Mounting Bracket for 15 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 materials, it...Features snap-fit mount for quick installation and easy replacementBracket may be surface mounted$9.99
- Truck-Lite®15 Series Bolt-on Mount Mounting Bracket for 15 Series Rectangular Lights (15729)Universal 15 Series Bolt-on Mount Mounting Bracket for 15 Series Rectangular Lights (15729) by Truck-Lite®. Polycarbonate. Want to raise your trailer's visibility? This Truck-Lite product just fits the bill. Made from top-quality...Features snap-fit mount for quick installation and easy replacementBracket may be surface mounted$9.28
- Truck-Lite®15 Series Bolt-on Mount Mounting Bracket for 15 Series Rectangular Lights (15404)Universal 15 Series Bolt-on Mount Mounting Bracket for 15 Series Rectangular Lights (15404) 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...Stylish design for contemporary lookSure contact, self-grounding feature$11.02
- Truck-Lite®15 Series Bolt-on Mount Rail Mount for 15 Series Rectangular Lights (15727)Universal 15 Series Bolt-on Mount Rail Mount 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...Extra strength plastic constructionFeatures top cut out area on mount #15727 for narrow rail design$8.66
- Truck-Lite®15 Series Rectangular Grommet Mount Grommet for 15 Series Rectangular Lights (15702)Universal 15 Series Rectangular Grommet Mount Grommet for 15 Series Rectangular 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...Flush mount vinyl PVC grommetSuitable for PC requirements on a 45-degree angle with incandescent lamps$6.01
- Truck-Lite®15 Series Surface Mount Mounting Bracket for 15 Series Rectangular Lights (15728)Universal 15 Series Surface Mount Mounting Bracket for 15 Series Rectangular Lights (15728) 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$6.81
- Truck-Lite®15 Series Surface Mount Mounting Bracket for 15 Series Rectangular Lights (15414)Universal 15 Series Surface Mount Mounting Bracket for 15 Series Rectangular Lights (15414) 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$9.31
- Truck-Lite®19 Series Bolt-on Mount Mounting Bracket for 19 Series Rectangular Lights (19726)Universal 19 Series Bolt-on Mount Mounting Bracket for 19 Series Rectangular Lights (19726) by Truck-Lite®. Polycarbonate. Want to raise your trailer's visibility? This Truck-Lite product just fits the bill. Made from top-quality...Features unique plug-in design for ease of installationLow-profile, extra-strength base$9.19
- Truck-Lite®19 Series Bolt-on Mount Mounting Bracket for 19 Series Rectangular Lights (19748)Universal 19 Series Bolt-on Mount Mounting Bracket for 19 Series Rectangular Lights (19748) 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...Popular in trailer and body applicationsFeatures unique plug-in design for ease of installation$7.21
- Truck-Lite®19 Series Bolt-on Mount Mounting Bracket for 19 Series Rectangular Lights (19720)Universal 19 Series Bolt-on Mount Mounting Bracket for 19 Series Rectangular Lights (19720) by Truck-Lite®. Polycarbonate. Want to raise your trailer's visibility? This Truck-Lite product just fits the bill. Made from top-quality...Features unique plug-in design for ease of installationLow-profile, extra-strength base$7.77
- Truck-Lite®19 Series Bolt-on Mount Mounting Bracket for 19 Series Rectangular Lights (19721)Universal 19 Series Bolt-on Mount Mounting Bracket for 19 Series Rectangular Lights (19721) by Truck-Lite®. Polycarbonate. Want to raise your trailer's visibility? This Truck-Lite product just fits the bill. Made from top-quality...Features unique plug-in design for ease of installationLow-profile, extra-strength base$6.93
- Truck-Lite®19 Series Radius Bolt-on Mount Mounting Base for 19 Series Rectangular Lights (19722)Universal 19 Series Radius Bolt-on Mount Mounting Base for 19 Series Rectangular Lights (19722) by Truck-Lite®. Polycarbonate. Want to raise your trailer's visibility? This Truck-Lite product just fits the bill. Made from top-quality...Features unique plug-in design for ease of installationLow-profile, extra-strength base$8.50
- Truck-Lite®19 Series Radius Bolt-on Mount Mounting Base for 19 Series Rectangular Lights (19750)Universal 19 Series Radius Bolt-on Mount Mounting Base for 19 Series Rectangular Lights (19750) by Truck-Lite®. Polycarbonate. Want to raise your trailer's visibility? This Truck-Lite product just fits the bill. Made from top-quality...Features unique plug-in design for ease on installationLow-profile, extra-strength base$10.57
- Truck-Lite®30 Series Bolt-on Mount Mounting Bracket for 30 Series Round Lights (30728)Universal 30 Series Bolt-on Mount Mounting Bracket for 30 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 steelUsed for mounting Model 30 grommets$11.56
- Truck-Lite®30 Series Bolt-on Mount Mounting Bracket for 30 Series Round Lights (30403)Universal 30 Series Bolt-on Mount Mounting Bracket 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 materials, it is...High-impact plastic mountQuick cam-on, cam-off light installation$11.36
- Truck-Lite®30 Series Deflector Bolt-on Mount Mounting Bracket for 30 Series Round Lights (30722)Universal 30 Series Deflector Bolt-on Mount Mounting Bracket for 30 Series Round Lights (30722) by Truck-Lite®. Polycarbonate. Want to raise your trailer's visibility? This Truck-Lite product just fits the bill. Made from top-quality...High-impact plastic deflector mountAllows quick and easy surface mounting of 2" diameter lights$8.96
- Truck-Lite®30 Series Deflector Bolt-on Mount Mounting Bracket for 30 Series Round Lights (30404)Universal 30 Series Deflector Bolt-on Mount Mounting Bracket for 30 Series Round Lights (30404) by Truck-Lite®. Polycarbonate. Want to raise your trailer's visibility? This Truck-Lite product just fits the bill. Made from top-quality...High-impact plastic mountDesign allows surface mounting of 2" diameter lights$13.03
- Truck-Lite®30 Series Round Grommet Mount Grommet Cover for 30 Series Round Lights (30713)Universal 30 Series Round Grommet Mount Grommet Cover for 30 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...Grommet cover designed to enhance appearance of lightsFlange cover offers improved theft resistance of all incandescent flanged models and 30251R/Y or 30272R/Y LED model$9.50
- Truck-Lite®30 Series Round Grommet Mount Grommet for 30 Series Round Lights (30401)Universal 30 Series Round Grommet Mount Grommet for 30 Series Round Lights (30401) 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...Flush mounts 2" diameter lightsWide groove for panel thickness up to 250"$8.31
- Truck-Lite®30 Series Round Grommet for 30 Series Round Lights (30402)Universal 30 Series Round Grommet for 30 Series Round Lights by Truck-Lite®. 1 Piece. PVC. 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...Flush mounts 2" diameter lampsWide groove for panel thickness up to 250"$8.96
- Truck-Lite®33 Series 0.125"-0.250" Sealing Round Grommet Mount Grommet (33725)Universal 33 Series 0.125"-0.250" Sealing Round Grommet Mount Grommet by Truck-Lite®. Rubber. This product is made from high-grade materials to meet the strictest standards of high quality. Designed with the utmost care and attention 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$5.55
- Truck-Lite®33 Series Bolt-on Mount Flange Mount for 33 Series License Lights (33805)Universal 33 Series Bolt-on Mount Flange Mount for 33 Series License 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...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$7.81
- Truck-Lite®33 Series Deflector Bolt-on Mount Mounting Bracket for 33 Series Round Lights (33711)Universal 33 Series Deflector Bolt-on Mount Mounting Bracket for 33 Series Round 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...Allow lights to be mounted to surface, routing wiring outside vehicle, using mounting holes designed to easily retrofit 19 Series bracket installationsHigh-impact plastic construction allowing use of grommet or flange mounts$7.05
- Truck-Lite®33 Series Flange Mount Flange Mount for 33 Series Round Lights (33800)Universal 33 Series Flange Mount Flange Mount for 33 Series Round Lights (33800) 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...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$5.63
- Truck-Lite®33 Series Flange Mount Flange Mount for 33 Series Round Lights (33810)Universal 33 Series Flange Mount Flange Mount for 33 Series Round Lights (33810) 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...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$5.94
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.