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Nilight 4 Pin Trailer Wiring Harness Kit 55513 Review
You need the right trailer wiring harness before your trailer lights can work safely. The wrong plug, model year, or connector style can turn a simple towing job into a wiring problem. This Nilight 4 Pin Trailer Wiring Harness Kit 55513 review helps you decide if this plug-and-play 4-way flat harness is worth buying for your Toyota T100, Tacoma, or Hilux.
Our Verdict
Rating: 8/10
Best For: Toyota owners who need a basic 4-way flat trailer light connector without cutting factory wires.
Bottom Line: You get a vehicle-specific harness, OEM-compatible connectors, a rubber dust cover, nine zip ties, and a simple 4-way flat plug. You give up 7-way trailer functions, electric brake support, and reverse light wiring.
| Specification | Detail |
|---|---|
| Brand | Nilight |
| Product Name | Nilight 4 Pin Trailer Wiring Harness Kit 55513 |
| ASIN | B0D99C2Z3R |
| Model / Part Number | Amazon product information lists 51060TR, while the listing title uses 55513 |
| Connector Type | 4-way flat trailer connector |
| Vehicle Compatibility | Toyota T100 1993-1998, Toyota Tacoma 2005-2015, Toyota Hilux 2008-2012 |
| Installation Type | Plug-and-play connection to OEM-compatible wiring points |
| Included Accessories | Custom 4-pin trailer wiring harness, 9 zip ties, 1 screw, rubber dust cover |
| Primary Use | Trailer tail lights, brake signal lights, and turn signals |
| Not Designed For | Electric trailer brakes, reverse lights, or 7-way trailer connections |
What Is the Nilight 4 Pin Trailer Wiring Harness Kit?
The Nilight 4 Pin Trailer Wiring Harness Kit 55513 is a vehicle-specific tow hitch wiring harness for select Toyota trucks. It gives your vehicle a standard rear 4-way flat trailer connector for light-duty trailer lighting. The kit fits listed Toyota T100, Tacoma, and Hilux model years, so you should not order by brand name alone.
Its main purpose is simple: it sends tail light, brake light, and turn signal signals from your Toyota to a trailer. The harness uses OEM-compatible connectors behind the driver-side and passenger-side taillight areas and the rear bumper area. That plug-and-play design helps you avoid cutting, splicing, or welding factory wires during normal installation.
The product also includes a rubber dust cover, nine zip ties, and one screw. The dust cover protects the 4-way flat plug when you are not towing. The zip ties help you route the wiring away from exhaust heat, sharp metal, suspension movement, and low points where water can collect.
Key Takeaways
- Fits select Toyota models, including T100 1993-1998, Tacoma 2005-2015, and Hilux 2008-2012.
- Uses OEM-compatible connectors that plug into factory wiring behind the taillight housings and rear bumper area.
- Provides a standard 4-way flat trailer connector for tail lights, brake signal lights, and turn signals.
- Includes one custom 4-pin trailer wiring harness, nine zip ties, one screw, and a rubber dust cover.
- Amazon product information lists ASIN B0D99C2Z3R and model/part number 51060TR, while the listing title uses 55513.
- Outdoor life depends on routing, moisture exposure, corrosion, road salt, and how often you tow.
Who It’s For and Who Should Skip It
Who It’s For
- Toyota T100 1993-1998 owners who need a basic 4-way flat trailer light connector.
- Toyota Tacoma 2005-2015 owners who want plug-and-play tow hitch wiring without cutting factory wires.
- Toyota Hilux 2008-2012 owners who need tail light, brake light, and turn signal output for a light-duty trailer.
Who Should Skip It
- You should skip it if your trailer needs electric brake control through a 7-way connector.
- You should skip it if you need reverse light power for a trailer or camper setup.
- You should skip it if your Toyota model year does not match the listed fitment or your wiring has heavy corrosion.
Product Compatibility and Fitment
The Nilight 4 Pin Trailer Wiring Harness Kit 55513 is made for specific Toyota vehicles. You need to match your vehicle year, connector location, and trailer plug type before buying. A correct fit matters more than the product name because Toyota wiring layouts can change by generation and market.
| Vehicle | Listed Fitment | Buyer Note |
|---|---|---|
| Toyota T100 | 1993-1998 | Check taillight connector access before installation. |
| Toyota Tacoma | 2005-2015 | This is not the same option as the 2016-2023 Tacoma variant. |
| Toyota Hilux | 2008-2012 | Verify your local trim and connector style before ordering. |
Model note: The Amazon listing title uses “55513,” but Amazon product information lists the part number and model as “51060TR.” Use the ASIN, fitment years, and connector type together when checking the product page.
Connector type: This kit provides a 4-pin flat connector. It supports basic trailer lighting, not 7-pin trailer functions.
Feature Deep Dive
Plug-and-Play Installation
The Nilight harness connects to existing factory wiring points with OEM-compatible connectors. That matters because a normal installation should not require cutting or splicing factory wires. For many Toyota owners, this lowers the risk of wiring mistakes and makes the job more beginner-friendly.
You still need access to the driver-side and passenger-side taillight connector areas. Older T100 and early Tacoma models may have dirt, corrosion, or previous wiring repairs near the rear bumper. Check those areas before you secure the 4-way flat connector near the hitch.
Standard 4-Way Flat Trailer Connector
The 4-way flat connector powers the trailer tail lights, brake signal lights, and turn signals. That setup works for many small utility trailers, boat trailers, and light-duty trailers. It does not support electric trailer brakes, auxiliary 12-volt power, or reverse light output.
This limitation is important. A trailer with brakes usually needs a 7-way connector and a brake controller. You can use this Nilight kit for basic lighting, but you should not treat it as a full towing electrical system.
Durability and Weather Protection
Nilight describes the converter housing and plugs as weather-resistant ABS plastic. The kit also uses a rubber dust cover for the 4-way flat plug. That cover helps protect the contact points from rain, road grime, and corrosion when you are not towing.
The stranded copper wire is wrapped in protective tubing, according to Nilight product details. Proper routing still matters more than the material alone. Keep the harness away from the exhaust, sharp edges, moving suspension parts, and spots where water can sit.
Included Accessories
The package includes one custom 4-pin trailer wiring harness, nine zip ties, one screw, and one dust cover. The nine zip ties give you enough support points for a clean route from the taillight area toward the hitch. The screw can help with mounting support where your vehicle layout allows it.
The kit does not list a separate mounting bracket in the included parts. If you want a fixed connector mount near the hitch receiver, check whether your vehicle already has a suitable bracket point. You may need a separate bracket for a cleaner permanent setup.
Installation and Ease of Use
The Nilight 4 Pin Trailer Wiring Harness Kit is built for plug-and-play installation. It connects to existing factory wiring, so most buyers should not need to cut or splice factory wires. You should still inspect the vehicle wiring first, especially on older Toyota trucks.
Plan your route before you secure the cable. Keep the harness away from exhaust heat, sharp metal edges, suspension movement, and low points where water can collect. A careful route can reduce strain on the connector and improve long-term reliability.
- Confirm your vehicle year and connector style.
- Access the driver-side and passenger-side taillight connector areas.
- Plug the harness into the OEM-compatible connectors.
- Route the 4-way flat connector toward the hitch area.
- Use the included zip ties to secure loose wiring.
- Test tail lights, brake lights, and turn signals before towing.
Setup difficulty: This kit is beginner-friendly if your vehicle matches the listed fitment and the factory connectors are clean and reachable. If you see corrosion, damaged wiring, or non-factory trailer wiring, inspect the vehicle before installing the harness.
How It Performs in Real Use
For Small Utility Trailers
The 4-way flat connector gives you the core lighting functions small utility trailers need: running lights, brake lights, and turn signals. That makes the Nilight harness useful for hauling garden supplies, small equipment, or household loads. It does not add trailer brake wiring, so match it to light-duty trailer needs.
For Boat Trailers
The rubber dust cover and weather-resistant converter housing help when the plug sits near rain, road spray, or boat ramp moisture. You should still dry and inspect the connector after wet use. Road salt, mud, and standing water can shorten the life of any trailer wiring connector.
For Older Toyota Trucks
The plug-and-play design helps older Toyota T100 and Tacoma owners avoid extra splicing. The main risk is the vehicle’s existing connector condition. If the factory plug area has corrosion, brittle wiring, or old aftermarket trailer wiring, fix those issues before you install the harness.
Durability and Included Accessories
The kit includes the core parts needed for a basic 4-way flat trailer light connection. Nilight describes the harness with a rubber dust cover, weather-resistant converter housing, and pure copper wiring. The dust cover matters because the 4-way plug usually stays near the hitch, where it can face rain, road grime, and corrosion.
Keep the dust cover closed when you are not towing. After driving through heavy rain, mud, or road salt, inspect the connector and clean it before the next towing trip. A small amount of prevention can help protect the connector contacts and reduce lighting issues.
| Item | Quantity | Notes |
|---|---|---|
| Custom 4-Pin Trailer Wiring Harness | 1 | 4-way flat trailer connector |
| Zip Ties | 9 | Used for secure cable routing |
| Screw | 1 | Used for mounting support where suitable |
| Dust Cover | 1 | Helps protect the 4-way plug when not in use |
Pros and Cons
Pros
- Vehicle-specific fitment for Toyota T100 1993-1998, Tacoma 2005-2015, and Hilux 2008-2012.
- Plug-and-play OEM-compatible connectors reduce the need for cutting or splicing factory wires.
- Standard 4-way flat connector supports tail lights, brake signal lights, and turn signals.
- Rubber dust cover helps protect the exposed trailer plug when you are not towing.
- Nine included zip ties help secure the harness along the rear wiring route.
Cons
- The 4-way flat connector does not support electric trailer brakes by itself.
- It does not provide reverse light power or 7-way trailer wiring functions.
- Fitment must be checked carefully because Toyota model years and connector layouts can vary.
- Older trucks with corroded connectors may need wiring repair before installation.
Is It Worth the Price?
The Nilight 4 Pin Trailer Wiring Harness Kit 55513 makes the most sense as a practical, budget-friendly wiring upgrade for listed Toyota trucks. You get a vehicle-specific harness, 4-way flat output, dust cover, zip ties, and plug-and-play installation. That combination gives you strong value for the price if your trailer only needs basic lighting.
The value drops if your towing setup needs more than tail lights, brake lights, and turn signals. A trailer with electric brakes, reverse lights, or auxiliary power needs a more complete 7-way setup. For simple light-duty towing, this Nilight harness is a smart buy for everyday use.
Nilight 55513 vs Similar Trailer Wiring Harnesses
Nilight is a good choice if you want a budget-friendly plug-and-play harness with the listed Toyota fitment. CURT 55513 is a close alternative if you prefer a long-established towing brand and a similar custom 4-way flat design. You can also compare other 55513-style replacement harnesses, but you should check fitment, connector quality, and return policy before buying.
| Option | Best For | Main Difference |
|---|---|---|
| Nilight 4 Pin Trailer Wiring Harness Kit 55513 | Budget-friendly Toyota 4-way flat wiring | Includes harness, zip ties, screw, and dust cover |
| CURT 55513 | Buyers who prefer a long-established towing brand | Also designed as a custom 4-way flat harness for select Toyota models |
| Other 55513-style replacements | Buyers comparing availability or reviews | Fitment, connector quality, and included accessories may vary |
Buyer Trust Notes
The Nilight 4 Pin Trailer Wiring Harness Kit 55513 has appeared as a consistently well-reviewed towing accessory on major retail listings. Buyer signals, shipping options, coupons, and availability can change, so check the current Amazon listing before buying.
Also confirm the seller, return window, fitment option, and warranty information on the product page. This matters because the wrong Toyota model year can make a trailer wiring harness unusable.
Frequently Asked Questions
Does the Nilight 55513 Harness Support Trailer Reverse Lights?
No. This is a 4-way flat trailer wiring harness for tail lights, brake signal lights, and turn signals. It does not power trailer reverse lights.
Can I Use It With a Vehicle-Mounted Brake Controller?
No, not by itself. A brake controller normally needs wiring for electric trailer brakes, often through a 7-way trailer connector setup. This Nilight harness provides basic 4-way light signals only.
Is the Wiring Length Sufficient for Extended Trailers?
The harness is designed to route the 4-way connector near the hitch area on listed Toyota models. If your setup has a longer custom route, measure your path before ordering and check whether you need an extension.
Does It Interfere With Factory Vehicle Electronics or Sensors?
It should not interfere when installed correctly because it connects through OEM-compatible wiring points. Still, you should test the trailer lights after installation and inspect older vehicle wiring for corrosion or previous repairs.
Is There a Warranty or Customer Support Contact?
Warranty and support terms can vary by seller and marketplace. Check the current Amazon seller details, return window, and warranty information before buying.
Does It Fit a 2016 or Newer Toyota Tacoma?
This selected listing option is for Toyota Tacoma 2005-2015 and T100 1993-1998, with Hilux 2008-2012 listed in the product title. Amazon also shows a separate Toyota Tacoma 2016-2023 size option, so choose the correct variant before ordering.
Do I Need to Cut Factory Wires?
No. The product listing describes this as a plug-and-play harness that connects to existing factory wiring without cutting or splicing. You should still inspect the factory connectors before installation.
The Bottom Line
The Nilight 4 Pin Trailer Wiring Harness Kit 55513 earns an 8/10 because it gives the right buyer a simple, vehicle-specific 4-way flat trailer wiring solution. You should buy it if your listed Toyota model needs basic trailer lights and you want plug-and-play installation. You should look elsewhere if your trailer needs electric brakes, reverse lights, or 7-way wiring.
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