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The 8 Best automotive trailer tow relays of 2025

Are you trying to find automotive trailer tow relays among various brands on the market but aren’t sure where to begin? To assist you in finding the right one, we’ve put together a list of the 7 best to help you pick the perfect one!

We investigated and evaluated a number of the top-selling automotive trailer tow relays on the market in order to create our list of the best. Making a decision among the many options available is never simple. There are an infinite number of models available, each with a distinct price. And as you’ll find out, the best options aren’t usually the ones you imagine! This comparison is rich and relevant because of the numerous factors that were employed. You will find products featured in this ranking not only based on their pricing but also on their features and other customers reviews. To write this review, we completed 26 hours of research and did 20 automotive trailer tow relays tests. You won’t need to pick products at random any more. If you’re unsure of what to look for, browse our list and consult the buying guide!

An overview of our top picks

Table of contents

The best automotive trailer tow relays you can buy today

No. 1
General Motors GM 20904439 Trailer Brake Continue Relay Assembly
  • Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
  • GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
  • GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
  • GM regularly updates production and service part designs to integrate new materials and technologies
No. 2
CURT 57000 Relay Kit for Nissan Armada, Titan
  • Fits Nissan Armada and Nissan Titan without tow package
  • Recommended for applications where over-current protection is required
  • Original equipment fit
  • Easy to install
  • Includes 3 relays
SaleNo. 3
Trailer Hitch Tow Relay Kit for Nissan Armada 2005-2024 Titan 2004-2024
  • Part Type: Trailer Hitch Tow Relay Kit
  • Fits Nissan pickups and sport utility vehicles without factory tow wiring.
  • Replacement applications that over-current protection is required.
  • Complete circuits kit for a trailer wiring connection.
  • Brown relay activates 12V power circuit, blue relays activate turn signals.
  • Direct replacement, easy installation.
No. 4
GM Genuine Parts 20904439 Original Equipment Trailer Brake Continue Relay Assembly,Replaces 20904439 - Compatible with Chevy, GMC and Cadillac Vehicles
  • 20904439 Brake Control Relay for GM-recommended replacement part for your GM vehicle’s original factory component,Offering the quality, reliability, and durability of GM OE,Manufactured with GM Original Equipment specification for fit, form, and function
  • REPLACE PART # - Replace For 20904439 2090-4439 25792959 25848909 25837945 15819418
  • Compatible Replacement for GMC & Cadillac Vehicles - 2008 - 2014 Escalade | 2008 - 2014 Escalade ESV | 2008 - 2013 Escalade EXT | 2008 - 2013 Avalanche | 2008 - 2013 Silverado 1500 | 2007 - 2014 Silverado 3500 HD | 2008 - 2014 Subruban 1500 | 2007 - 2013 Suburban 2500 | 2008 - 2014 Tahoe | 2008 - 2013 Sierra 1500 | 2007 - 2014 Sierra 2500 HD | 2008 - 2014 Yukon | & more.
  • Offering the quality, reliability, and durability of GM OE.Manufactured with GM Original Equipment specification for fit, form, and function
  • One year warranty: During the warranty period,if there is any problem with your Trailer Brake Control Relay, please contact us, we will refund you or send you a new replacement.
No. 5
APDTY 141815 Trailer Tow Relay aka Trailer Brake Continue Relay Assembly (Replaces 20904439, 25837945, 25848909)
  • Brand New Trailer Tow Relay (Trailer Brake Continue Relay Assembly)
  • Commonly Needed To Restore Brake Light Operation
  • Compatible With 2008-2014 Cadillac Escalade 2008-2013 Avalanche Silverado 1500 2007-2014 Chevrolet Silverado 2500 HD 3500 HD (Except 2007 Classic) 2008-2014 Chevrolet Suburban 1500 2500
  • Compatible With 2008-2013 GMC Sierra 1500 2007-2014 GMC Sierra 2500 3500 (Except 2007 Classic)
  • Replaces 20904439, 25837945, 25848909
No. 6
(Pack of 3) 12V 30A Relay for Ram Trailer Tow Lights, Replaces The VFM-21F42-S01
  • Contact Current-Max30A
  • Nominal Coil Voltage12V
  • 5 Terminals
  • Operating Temp Range-40°C to +125°C
No. 7
CARROFIX Custom-Fit Vehicle Wiring Harness with 4 Way Flat Trailer Connector, Compatible with Nissan Frontier, Pathfinder, Xterra and Suzuki Equator
  • Vehicle Fitment - This trailer wiring kit is compatible with 2005 - 2024 Nissan Frontier / 2005 - 2012 Nissan Pathfinder / 2009 - 2012 Suzuki Equator / 2005 - 2015 Nissan Xterra without factory tow package, carefully check the Model/Year to avoid mistakes
  • Main Features - This trailer wiring harness kit is constructed with 18-gauge bonded wire with 4-flat plug and cap; 7.5 amp stop light/turn signal circuit capacity; includes the large brown relay activates the 12 volt power circuit and the blue relays power the turn signal circuits
  • Reliable Connection - Provides a standard 4-pin flat trailer wiring connector at the rear of the vehicle and the jumper harness to give you a working 4 flat connection used for trailer tail lights, brake lights and turn signals, adding versatile towing options for your vehicle
  • Simple Installation - Plug & play wiring harness. Simply plugs the 4-flat trailer wiring kit directly into factory tow package harness - no cutting, splicing or tapping required, up to 5ft length for flexible positioning
  • Effective Solution - Includes wiring harness with required relays to activate functions and necessary accessories for completely installation. Directly supplied by carrofix and support MONEY BACK GUARANTEE.
No. 8
New for GM 2007-2014 Silverado Sierra Trailer Brake Control Tow Relay with Connector Plug Harness 20904439
  • REPLACE PART # - Replace For 20904439 2090-4439 25792959 25848909 25837945 15819418
  • FIT THE FOLLOWING VEHICLE - Electrical TRAILER TOW Relay Fit For 2007-2014 GM Silverado Sierra
  • MANUFACTURED with For GM Original Equipment specification for fit, form, and function
  • DIRECT FIT- A direct replacement for proper installation and easy mounting, made from quality materials that meet or exceed OEM standards and are rigorously tested before leaving the factory. It works better, is more stable and lasts longer, let IXGKHC Helping you solve car problems.
  • Buy with confidence - order from IXGKHC. PLEASE CHECK IN DETAIL BEFORE PURCHASING, double check your vehicle's year, model, engine and litres.
No. 9
Sylvil 4 PCS Power Relay, 5 Pin Multi Purpose Auto Fuel Pump Relay, G8V-RH-1C7T-R-DC12 Automotive Relay, High Performance Electrical System Electromechanical Relay Replacement
  • 【Excellent Material】: Adopting high quality plastic as the shell. It is strong, not easy to deform or break, can also withstand certain hot and cold conditions, which is very durable. The metal pins have excellent conductivity and good performance. Sealed design with good waterproof performance is not easy to short-circuit.
  • 【Function & Application】: The purpose of this relay is to automatically adjust and protect the circuit, providing safety. It has a wide range of applications, suitable for many electric vehicles, such as cars and motorboats. It's widely used in various electrical systems, such as fuel pumps, electric windows, door locks and lighting systems.
  • 【Size & Model】: It measures 0.9×0.98 inches and the model number is G8V-RH-1C7T-R-DC12 12VDC, suitable for 12V voltage. It is designed with five pins for more efficient and stable connection. It is a great replacement for your old or broken relay, saving you time and money to the repair store.
  • 【Using Method】: This relay is very simple to install and operate. You just connect the relay to the wires, and the components will function normally. The process can be completed in seconds without other tools, compact and lightweight design for easy installation in tight spaces, providing a hassle-free experience.
  • 【What You Get】: The product is available in two pieces and four pieces options for you to choose. The quantity is sufficient to meet your daily use and replacement needs, you can also share it with your family and friends.
No. 10
Trailer Tow Relay Compatible With Hummer H3 2006 2007 2008 PC-860109
  • 📦 Includes 1 (One) Trailer Tow Relay
  • 👉 Fits list of vehicles in image gallery fitment chart
  • ✅ Exceptional Quality and Performance: This OE replacement trailer tow relay is designed to meet, if not exceed, the performance and quality standards of the original equipment installed on your vehicle. Experience the same high-level performance as your original parts with this trailer tow relay.
  • ✅ Direct Replacement, No Fuss: This OE replacement trailer tow relay is meticulously designed for your specific vehicle
  • ✅ Perfect Compatibility: Compatibility is key. Make sure to check our product specifications (in image gallery) to confirm that this OE replacement trailer tow relay matches your vehicle
No. 11
UBOG Trailer Lock,Trailer Hitch Locks,Car Accessories Trailer Coupler Lock,Hitch Locks with Keys,Trailer Hitch Pin Lock,Trailer Tongue Lock,Dia 1/4 Inch, 3/4 Inch Span for Tow Boat RV Truck Cars
  • [Material] Trailer hitch locks are made of high-quality zinc alloy material, which is durable, corrosion-resistant, not easy to break or crack, and can be used for a long time.
  • [Design] Trailer coupler lock locking pin design: 1/4 inch diameter tongue lock pin, effective length 3/4 inch, small size, easy to carry, and will not take up too much space.
  • [Easy to Operate] Only need to rotate the flat key 5-7 times to open or close the hitch lock, which is easy and quick to operate.
  • [With 2 Keys] 2 keys are included in the package for your convenience. and never worry about losing it.You can put the spare key in a separate place for emergency, or give it to family or friends.
  • [Applicable] Trailer lock is widely used in trailers, boats, RVs, trucks, cars, etc. Before purchasing our trailer hitch pin lock, please verify the size and length of the required pin.
No. 12
Car Tow Hook Kit, Ring Shaped Universal Bumper Trailer Tow Hook Car Decor Sticker, Track Racing Style Tow Hook Ring Auto Exterior Accessories for Car Truck SUV - Only for Decoration (Black)
  • 【Material】:The trailer hook decoration is made of high-quality ABS plastic, which is sturdy and can be used in all kinds of weather conditions. Equipped with adhesive tape on the back, it can be applied to any smooth surface, such as the front or rear bumper of a car.
  • 【Compatibility】:This general trailer hook is suitable for most cars, trucks, off-road vehicles, and other vehicle trailer rings. Note: The trailer hook is for decorative purposes only, please do not use it to tow any object.
  • 【Good Appearance】:This car trailer hitch has a beautiful appearance, sports racing style design, can be freely twisted 180 degrees for easy use, and can add a strong color impact for your car bumper, making your car stand out, and making your car unique.
  • 【Easy to Install】:This car trailer hook is easy to install. First, just clean the surface on the bumper of the car, then tear off the tape on the back and paste it on the location where it needs to be installed.
  • 【Package Include】:You will get 1 car trailer hitch decoration (4.20 x 2.85 inches) and 1 hexagonal wrench (3.06 x 1.11 inches), compact and portable, lightweight, and easy to use.
No. 13
Gebildet JD1912 Car Relay Harness 12V 40A 4 Pin SPST 12AWG Harness Sockets with Color-Labeled Wires for Automotive Truck Van Motorcycle Boat (Pack of 2)
  • Brand new heavy duty SPST(Single Pole Single Throw) relays with color-labeled wires.
  • Minimum operating voltage 8V, corresponding minimum operating current is 100mA; Standard operating voltage 12V, corresponding standard operating current is 150mA.
  • Small size/Low power consumption/High contact voltage/ High sensitivity.
  • Contact Material: Ag Alloy / Contact Resistance: ≤ 100MΩ.
  • Life Expectancy Electrical: 100,000 Operation, Life Expectancy Mechanical: 10,000,000 Operation.
No. 14
SINGARO 2 Inch Universal Flag Tow Hitch Covers, Trailer Hitch Cover Tube Plug Insert, Car Exterior Accessories, Receiver Tube Hitch Plug(American Flag-B)
  • Universal Design:The 2-inch size with the flag exterior design is not only suitable for most vehicles, easy to install, but also stylish and beautiful.Suitable for trailer hitches, towing hitches, etc., it is recommended that you can measure the pendant receiver size before purchasing.
  • High Quality:Made of high-quality black soft rubber and aluminum sheets, it greatly extends the life of the tow hook cover and will not be damaged even in extreme heat or cold weather.
  • Utility: A well fitting receiver tube cover 2 inch keeps mud, dirt, dust, rain, snow, ice and small animals out off the tube and prevent receiver tubes from rusting.
  • Easy to Install: Simply push it into your hitch tube without any tool. There is no need for something to fix, just rubbing it to keep it always there and not easily fall off.
  • After-sales Service:If you have any questions about our products, please feel free to tell us, our team will reply to you as soon as possible.
No. 15
EHDIS Car Relay 4 Pin 12v 40amp Spst Model No.: JD2912-1H-12VDC 40A 14VDC, Auto Switches & Starters,Pack of 2
  • Heavy duty 4-prongs SPST relays, jd1912 12v 40a relay
  • Use optional Relay Harness, or female Crimp Connectors
  • High 40A coil capacity- able to handle those high current applications with ease
  • Package Include: 2 x 40A 4-Pin 12V Vehicle Relays
  • The Automotive relay is suitable for normal automobile use and simple to operate, you just need to connect the relay with the wire, no other tools needed, convenient for your use and replace, allowing your components to work properly
SaleNo. 16
gunroil 1 Pack Car Front Bumper Tow Hook, Waterproof Durable Metal Vehicle Tow Hook Accessory, Screw-in Design, Foldable Automotive Tow Pull Ring, Universal Tow Auxiliary Tool for Most Cars (Black)
  • Towing Features: When your car breaks down, you need towing accessories to help you move your vehicle. This car front bumper trailer hitch can provide towing function, reduce waiting time and reduce the impact on road traffic.
  • Durability: This car front bumper trailer hitch is made of waterproof metal material with high hardness and excellent load-bearing capacity. No need to worry about it not being able to tow your vehicle. The metal bearings spin, you just grab the tab and spin.
  • What You Will Receive: After purchase, you will receive 1 x car front bumper trailer hitch to provide protection for daily travel. This car front bumper tow hitch ensures you can quickly tow your car to a repair shop without having to rent expensive towing equipment, saving you time and money.
  • Pull-ring Design: This car's front bumper trailer hitch adopts a pull-tab design. The pull tab can be flexibly folded or opened. You can directly fix it on the trailer hitch for easy use at any time. Users can easily fix it directly by rotating it without using additional tools.
  • Universal Accessory: This car front bumper trailer hitch can withstand extreme temperatures and can handle harsh weather like rain and snow. No need to worry about it being affected. It can be used in many types of vehicles, such as cars, SUVs, trucks, etc.
No. 17
KHGUZ Car Front Bumper Tow Hook, Aluminum Alloy Vehicle Bumper Screw-in Pull Ring, Foldable Automobile Modification Towing Connection Accessories, Universal for SUV, Truck, Trailers(Red)
  • 【High Quality Material】: This car front bumper tow hook is made of high strength aluminum alloy material, which has excellent impact resistance, not easy to deform, strong antioxidant ability, wear-resistant, and can withstand its huge pressure. As a result, it has a long service life and can be used for a long time.
  • 【Practical Function】: When a car breaks down and cannot move on its own, or gets stuck in mud, snow, etc. and needs to be towed to the rescue, the front bumper towing ring becomes the key. The rescue vehicle can be connected to this ring via a tow rope or tow hook to safely tow the vehicle. It is able to withstand high towing forces, ensuring stability during towing and protecting the bumper from damage.
  • 【Convenient and Quick】: The front bumper towing ring of the car is designed with an easy-to-snap round shape, which enables rescuers to quickly connect the towing equipment in a short period of time, shortening the rescue time, which is more important especially in emergency situations.
  • 【Easy Installation】: The car front bumper towing ring is very simple and quick to install, without complicated modifications or drilling. Its surface is made of European threads, you just need to fasten it directly to the front bumper of your car by rotating and tightening it. This greatly saves your time and effort.
  • 【Unique Design】: The product has a unique design and adopts a pull-ring design, which makes it more convenient to use. And it has three colors to choose from, including red, black, and blue, and its overall design can show a sense of sports, which will highlight the style of your car.
No. 18
Ziciner Car Trailer Hitch Cover, 2 Inch Hitch Cover Tube Plug Insert, Rubber Receiver Tube Plug Towing Hitch Covers, Auto Exterior Universal Accessories Fits 2 Inch Receivers (Black)
  • 【High Quality Material】: The tow hitch cover is made of high quality soft silicone material. The material is non-toxic, safe and durable, which extends the service life of the trailer hitch cover to a certain extent. Even for long-term use, it can always keep excellent appearance, so you don't have to worry about the cover falling off while driving.
  • 【Professional Protection】: The tow hitch cover plays a good role in protecting our car parts. It prevents rain, snow, dust and ice from entering the receiver, it also protects the receiver from rusting and keeps the receiver tidy. Therefore, protecting your car and improving driving safety.
  • 【Universal Design】: The trailer hitch cover adopts a universal design. This design not only makes the product look stylish, exquisite and flawless, but also highlights the fine workmanship of the product, which is favored by consumers. Most importantly, it is designed to be compatible with most models of trailer hitch receivers.
  • 【Easy to Install & Remove】: Installing the trailer hitch cover is very simple. You don't need to use tools such as pins and clamps, just push the trailer hitch cover directly into the hose slowly to complete the installation. When you are not using it, just remove it directly, saving time and effort.
  • 【Package includes】: The styles are various, you can choose any one you want. After placing an order, you will get 1 pc 2 inches car trailer cover. This trailer hitch cover is designed for standard 2'' x 2'' trailer hitch receivers for your use and replacement needs.
SaleNo. 19
Armordillo 7161504 2.75" Drop Down Loaded Ball Mount Trailer Tow Hitch with 2" Receiver Tube Universal Fit - Black
  • [ FITMENT ] - Compatible With Trailer Hitch With A 2" x 2" Receiver Tube Opening ( Universal Fit Most Class 3, Some Class 2 / 4 Trailer Hitch )
  • [ STYLE ] - 2.75" Drop Rear Hitch Loaded Ball Mount
  • [ DESIGN & FUNCTION ] - Trailer Towing Hitch / Trailer Towing Hitch Mount Designed For Towing All Kinds Of Accessories Such As Different Sizes Of Vehicle, A Bike Rack, RV, Trailer, ATV Motorcycle, Off-Road Equipments, Camping Equipments, Wheelchair, Etc ; 2.75" Drop / 0.75" Rise For Trailer Leveling ; Works Well With Trucks, SUVs & Vans For Towing Purposes
  • [ SPECIFICATIONS ] - Receiver Size: 2" Receiver Tube ; Trailer Ball Diameter - 2" ; Equipped With A 1" Hole To Accept A Trailer Ball Shank ; Length - 8.5" ; High Quality Steel & Made Ready For Heavy Duty Towing Work
  • [ QUALITY, COLOR & COMPONENTS ] - High Quality Steel & Made Ready For Heavy Duty Towing Work ; Silver With Polished Chrome Finish ; Each Kit Contains 1x Load Ball Mount & Required Installation Hardware With Easy To Follow Installation Guide That Requires A Basic Mechanic Tool Set ( Trailer Ball, Pin & Clip Are Included )
SaleNo. 20
uxcell 2 Pcs Z1507091/4 4 Pin DC 12V 40A Universal Car Vehicle Motor Fuse Relay Switch Power
  • Pin Number: 4; Voltage: DC 12V; Amp:40A
  • Dimension: 6x2.5x2.2cm / 2.36"x0.98"x0.87"(L*W*H); Contact Type: SPST
  • Made of metal and plastic, durable materials for long time service.
  • Suitable for cars and motorcycles. It is recommended to confirm the model, appearance, and function before placing an order.
  • Make sure this is the correct relay replacement your car need before purchase.

How to choose a good automotive trailer tow relays

Does the idea of finding a fantastic automotive trailer tow relays make you anxious? When it comes to purchasing this product, specifically when deciding which model to select, has your head been spinning between options? You are not alone if that is the case. We are aware of the pressure involved in the purchasing process!

Your presence here indicates that you are interested in automotive trailer tow relays. Before choosing which product would be the best for your needs after being inundated with information, locate a reliable source with genuine selections. You can get that information from a variety of sources, including buying guides and rating websites, word-of-mouth recommendations from friends and family, online discussion forums where users can share their own experiences, product reviews that can be found all over the internet, and YouTube channels. You can only get the right product through exhaustive analysis. But you realize that’s not always simple. In order to ease your concerns, we have taken the time to develop a list of the top automotive trailer tow relays products available right now. You might be wondering how we came up with the list. How was this buying guide developed?

First, we used our algorithms to gather as much reliable data as we could about these products. To verify all the data gathered, we used both artificial intelligence and a lot of algorithms.
Then, our experts used criteria that are recognized in the business to evaluate them according to their quality to price ratio, allowing us to choose the top automotive trailer tow relays on the market right now!

The selection of the goods is not arbitrary. Before creating a list, we take into account a number of factors. Below are some of the criteria discussed:

Brand Value: What happens if you choose a dubious brand just because it appears to be a good deal? So the likelihood of receiving a product with a short shelf life increases. That is due to the fact that well-known brands have a reputation to uphold, while others do not. Top automotive trailer tow relays brands strive to provide some distinctive traits that set them apart from the competition. So, hopefully one or more of the items on our list will be perfect for you.

Features: Useful features are all you need, not tons of them. We consider the important aspects and select the top automotive trailer tow relays based on those.

Specifications: Numbers always help you measure the quality of a product in a quantitative way. We try to find products with higher specifications, but with the right balance.

Quality: A product’s quality may always be quantified with the aid of numbers. We look for goods with better standards that strike the proper balance. The best quality product that gets highly appreciated and recommended by experienced users.

Customer ratings:  Would it be accurate to suggest that the automotive trailer tow relays were used by hundreds of customers before you? Superior ratings indicate that many customers had better service.

Customer Reviews: Like ratings,  provide you with accurate and reliable information about the product from genuine customers. Customer ratings are very important to all of us because they contain accurate and reliable information about the customer service we received from several hundred customers.

Seller Rank: This is very intriguing! Not only do you need a good automotive trailer tow relays, you also need a product with rising sales that is trendy. It accomplishes two goals. First, the expanding user base proves the quality of the product. Second, given that number, producers must be able to offer greater quality and after-sales support.

Value: You get what you pay for, they say, so consider the value. Cheap isn’t always good and expensive isn’t always bad. However, that does not imply that spending a lot of money on a product that is flashy but underwhelming is a good idea. Before adding them to the list, we make an effort to evaluate how much value you can get for your money from your automotive trailer tow relays.

Durability: Durability and reliability are closely related concepts. You will benefit from a strong and long-lasting automotive trailer tow relays for months and years to come.

Product availability: Products come and go, and new ones replace the old ones. Most likely, a few new features and required changes were made. What use is it to use a supposedly good product if the maker no longer supports it? We make an effort to highlight products that are current and offered by one or more trustworthy sellers, if not more.

Negative Reviews: Yes, we do take that into account as well! The goods with the majority of bad reviews are filtered out and disregarded when we choose the best-rated one on the market.

These are the standards by which we selected our automotive trailer tow relays. Do we end our process there? Hell no. The most crucial fact about us that you should be aware of is that we regularly update our website with current and pertinent information. We have one more layer of filtration since we place the greatest importance on reader satisfaction. Please let us know if any product included here is incorrect, irrelevant, subpar, or simply out of date. We always value your opinions, and we’ll work hard to make any necessary corrections to our list in response to them.

Why should you believe us?

There are now thousands of possibilities for these products on Amazon, but choosing the best one can be difficult and time-consuming. And what automotive trailer tow relays should you purchase in 2022?

This guide is the result of more than 10 years of experience in researching, testing and writing about many topics. Each member of our team is an authority in their area. We read every article we could find online and every consumer review on every retail website for seven hours. Additionally, we discovered a ton of websites that offered helpful resources, including buying tips and thorough information on automotive trailer tow relays.