WoneNice Waterproof LED Light Kit & Trailer Light Harness

Last updated date: May 17, 2022

DWYM Score

9.2

WoneNice Waterproof LED Light Kit & Trailer Light Harness

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We looked at the top Trailer Light Harnesses and dug through the reviews from some of the most popular review sites. Through this analysis, we've determined the best Trailer Light Harness you should buy.

Update as May 17, 2022:
Checkout The Best Trailer Light Harness for a detailed review of all the top trailer light harnesses.

Overall Take

This set includes a trailer light harness, two combination tail and brake lights, two marker lights and a license plate bracket. Everything you need to install the set is also included.


In our analysis, the WoneNice WoneNice Waterproof LED Light Kit & Trailer Light Harness placed 4th when we looked at the top 6 products in the category. For the full ranking, see below.

From The Manufacturer

Complete Trailer Light Kit: This Trailer Light Kit includes 2 combination tail and brake/turn signals lights, 2 amber LED marker lights ,25-ft wiring harness,license plate bracket and mounting hardware bag, everything you need to do the install included. Waterproof and Submersible trailer lights: The circuit board is completely sealed and IP68 waterproof, which protects the board from short circuit even soak in the water, it can work long hour in rainy days, fog day or snow day, it is totally submersible(Test Underwater light for 24 hours). Super clear and brighter SMD 5050 lamp beads produces a super light, no glare, Up to 50,000 hrs life expectancy. Compliant with DOT standards, perfect replacement trailer lights for RV, tractors, canoes,towing vehicle, truck, trailer, boat, bus, Lorry, Van, caravan, snowmobile etc. Product Size: 8*2.95*2.83 inches, 25ft wiring harness, so that it is long enough to reach end of trailer, instruction included.

An Overview On Trailer Light Harnesses

If you are towing a trailer behind your vehicle, one of the most important gadgets you will need is a trailer light harness. This gadget is a wire that goes from the back of your vehicle to the trailer, connecting their electrical systems. This way, your vehicle supplies power to the trailer’s lights and ensures they are synchronized with the vehicle’s taillights. In some cases, the trailer light harness can also connect the trailers brakes and auxiliary power with your vehicle.

Without this important gadget, you are not ready to take your trailer out onto the road. If you don’t use a trailer light harness, drivers on the road will not be able to see the lights on your vehicle as they may be blocked by the trailer. This can cause dangerous driving conditions as the drivers may not be able to see when you are braking or where you are in low light conditions. This is why using a trailer light harness is the law – and common sense.

When getting a trailer light harness, it’s important to consider what the plug or socket type is, how many pins are on the harness and what the wiring configuration is. There are a few different types of plugs and socket connections, such as flat, circular and RV blades. When it comes to pins, most trailer connectors come with between four to seven pins. The number of pins it includes corresponds with the number of roles the harness has. One pin is the grounding system and the rest of the pins have different functions.

The Trailer Light Harness Buying Guide

  • If you want to protect your trailer light harness and ensure it lasts for years, it’s important to keep it covered as much as possible. This can reduce corrosion and make the connectors more secure. Some people further protect their trailer light harness by applying Dielectric grease on the connectors. This helps to keep any moisture off of the trailer light harness. If your live in an area that gets a lot of rain and snow or you use the trailer for a boat, it’s important to take active steps to avoid corrosion.
  • Some trailer light harnesses are made for specific types of trailers while others offer a wider application. For example, some can be used for boat trailers, horse trailers, motorcycle trailers, ATV trailers and other types of trailer hitches.
  • Compatibility is key, so be sure to carefully check what type of trailer light harness your need for your vehicle and for your trailer. If you use multiple vehicles to pull the same trailer on different occasions, this is another element to keep in mind when checking compatibility.
  • How long of a wire do you need to connect the vehicle to the trailer? Many trailer light harnesses are either four feet or six feet long, but some actually go to eight feet long. This offers you a lot more flexibility.
  • Some trailer light harnesses actually come with a full kit which includes the tail lights and brake lights. This is what you need if the trailer doesn’t have its own lighting system already in place.