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The Best Automotive Replacement Trailer Tow Relays

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Our picks are based on Amazon bestseller rankings, verified customer ratings, and product availability. We update our recommendations regularly to ensure accuracy.

Ensuring your vehicle's trailer lighting system functions correctly is crucial for safety and compliance. A reliable tow relay is the unsung hero of this system, managing power distribution and preventing electrical issues. Investing in a quality replacement relay can prevent costly repairs and ensure peace of mind on the road.

No. 1
Circuit Relay Kit Replacement for Nissan Armada Titan w/o Tow Package
  • Complete circuits kit replacement for a trailer wiring connection.
  • Replacement applications that over-current protection is required.
  • For Nissan pickups and sport utility vehicles without factory tow wiring.
  • Brown relay activates 12V power circuit, and blue relays activate turn signals.
  • Direct replacement, easy installation.
No. 2
4Pin Fuse Box Tow Relay 9C2T-14B192-AA (Pack of 2) - OEM Replacement for Ford - Universal 4-Pin Design...
  • ​​Guaranteed Ford Compatibility​​: Direct replacement for OEM part ​​9C2T-14B192-AA/9C2T14B192AA​​, ensuring seamless integration with Ford trailer circuit systems. Verify your original part number before purchase.
  • ​​Universal 4-Pin Compact Design​​: Industry-standard 4-pin plug structure simplifies wiring and saves space. Ideal for automotive control systems in trailers, RVs, and trucks.
  • ​​High-Performance Conductivity​​: Features precision-engineered ​​copper coils and silver-plated contacts​​ to minimize resistance, enhance electrical stability, and extend product lifespan under heavy loads.
  • Plug-and-Play Installation​​: Pre-wired connectors enable effortless DIY or professional repairs—no specialized tools required. Reduces downtime during maintenance. ​​Robust Safety Protection
  • ​​Rigorous Durability Testing​​: Engineered with flame-retardant thermoplastic housing for waterproof, dustproof, and vibration-resistant performance in harsh environments. Product Description
No. 3
QKYS 2PCS 12088567 8567 Automotive Relay, High-Performance 12VDC 30A 4Pin Fuse Box Relays, 12088567 8567 GM...
  • 【Compatible】Replaceable part numbers: 12088567, 12135170, 13502679, 13500114, 19116057, 15328866, 19115083, 19115080, 15393412, 22867702, our relays are suitable for Buick, Cadillac, Chevrolet, GMC, Pontiac, etc.
  • 【Operating Temperature】12088567 8567 automotive relays have strong high temperature resistance and can operate stably at temperatures from -40°C to 125°C, making them ideal for engine compartments and harsh automotive environments.
  • 【Coil Voltage】The coil voltage of this 4-pin power relay is 12 VDC and can handle a maximum current of 20A. These parameters enable it to operate stably in the complex voltage environment of the vehicle, avoiding failure or damage caused by parameter...
  • 【Durable Quality】This 4-pin power relay is made of high-quality materials, with fast conductivity and ultra-long durability, providing uninterrupted power control in the harshest road environments
  • 【Installation method】This 12088567 4-pin relay can be seamlessly plug-and-play, without tools or wiring. Its pin definition and installation dimensions are precisely matched with the vehicle's relay socket, and can directly replace the original relay
No. 4
3-Pack 25230-79917 Relay - 12VDC 30A 4-Pin SPST Automotive Relay - Compatible with Nissan & Infiniti Vehicles...
  • High-Current SPST Control – 30A 12VDC 4-pin design ensures reliable switching for trailer lights, brake controllers, and auxiliary power circuits
  • Direct Replacement for Nissan OEM Relays – Compatible with for Nissan Armada (2020-2024), Frontier (2022-2024), Altima (2024), and Infiniti QX60 (verify year/model)
  • Solves Tow System Faults – Addresses trailer light flickering, brake circuit interruptions, and power loss in towing modules
  • Cross-References 25230-79917 & 255-050 – Verified replacements for seamless integration into factory wiring systems
  • 3-Pack Value with Backup – Triple relays ensure redundancy for critical towing and lighting systems at a cost-effective price
No. 5
Geradepart RY-612 Trailer Tow Relay Fit for Ford Fit for F150 F250 Super Duty Explorer Grand Cherokee...
  • 【Replacement OE Part Number & Year & Liter 】Our Trailer Tow Relay Replaces RY-612, 1R1057, E6LB-9C392A-A, F4SB-14B192-A, 203-0172, 0332207108, 0332207109, 0332207307, 332207109, AR606, AR260, VFM15F21S...
  • 【Compatible with Ford Vehicles】 Trailer Tow Relay Fit for 1997-2003 EXPEDITION | 1995-1996 EXPLORER | 1997-2003 Fit for F-150 | 1997-2001 Fit for F-250 | 1999-2001 Fit for F-250 SUPER DUTY
  • 【Compatible with Dodge Vehicles】 Trailer Tow Relay Fit for 1997 B1500 | 1997 B2500 | 1997 B3500 | 1997 Fit for Ram 1500 | 1997 Fit for Ram 1500 VAN | 2003 Fit for Ram 1500 VAN | 1996-1997 Fit for Ram 2500 | 2003 Fit for Ram 2500 VAN | 1996-1997 Fit...
  • 【Compatible with Jeep Vehicles】 Trailer Tow Relay Fit for 1995-1997 CHEROKEE | 2006 COMMANDER | 2009-2010 COMMANDER | 1995-1997 GRAND CHEROKEE | 2005-2006 GRAND CHEROKEE | 2009-2010 GRAND CHEROKEE
  • 【Compatible with Cadillac Vehicles】 Trailer Tow Relay Fit for 1995 DEVILLE
No. 6
Gebildet 2pcs 12V 40A 4 Pin SPST Car Relay Harness JD1912, 12AWG Harness Sockets with Built-in Diode for...
  • Integrated Diode: Each relay includes a built-in diode that suppresses induced voltage during switching, safeguarding your electrical components from potential damage.
  • Small size/Low power consumption/High contact voltage/ High sensitivity.
  • Contact Material: Ag Alloy / Contact Resistance: ≤ 100MΩ.
  • Minimum operating voltage 8V, corresponding minimum operating current is 100mA; Standard operating voltage 12V, corresponding standard operating current is 150mA.
  • Life Expectancy Electrical: 100,000 Operation, Life Expectancy Mechanical: 10,000,000 Operation.
No. 7
Geradepart RY-412 5.0L 5.6L Trailer Tow Relay Fit for Nissan Titan Xd 04-24, 1R1180 1R1312 1R1559 25230-0B...
  • 【Replacement OE Part Number & Year & Liter 】Our Trailer Tow Relay Replaces RY-412, 1R1180, 1R1312, 1R1559, 25230-0B015, 25230-79963, 25230-79964, 25230-7996A, 25230-C9963, 25230-C9973, 203-0075, AR6054, 36173, AR764, 89057646, E1774A, R...
  • 【Compatible with Nissan Vehicles】 Trailer Tow Relay Fit for 2004-2015 TITAN | 2017 TITAN | 2019-2024 TITAN | 2016-2018 TITAN XD | 2020-2023 TITAN XD
  • 【Secure & Vibration-Resistant】Features a positive locking clip and tight seal to prevent disconnections, ensuring reliable performance in high-vibration environments.
  • 【Superior Weatherproofing】 Integrated IP300-rated seal protects against dust, water, and moisture, guaranteeing optimal function in harsh engine bay conditions.
  • 【Premium Materials】 Constructed with high-temperature resistant PA379 plastic and precision copper terminals for excellent conductivity and long-term durability.
No. 8
irhapsody 12vdc 30amp 4-pin Spst Multi-Purpose Starter Relay, Automotive Replacement Relays
  • Plug-and-play style
  • Compact 12-volt 4-prong relay
  • Stay within its capabilities. Try to stay 10 to 15% below what the rate is for
  • Works on lawnmowers and lots of cars
No. 9
Zettler (Pack of 3) 12V 30A Relay for Ram Trailer Tow Lights, Replaces VFM-21F42-S01
  • Contact Current-Max30A
  • Nominal Coil Voltage12V
  • 5 Terminals
  • Operating Temp Range-40°C to +125°C

Last update on 2026-07-11 / Affiliate links / Images from Amazon Product Advertising API

How to Choose the Best Automotive Replacement Trailer Tow Relays

Choosing the Right Type

There are several types of trailer tow relays, including standard, heavy-duty, and electronic versions. Standard relays are common in many vehicles. Heavy-duty options are suitable for trailers with higher power demands. Electronic relays may offer more precise control and faster response times. Always verify the specific type recommended for your vehicle's make and model to ensure optimal performance and avoid compatibility problems.

Frequently Asked Questions

What are the symptoms of a failing trailer tow relay?
Common signs include trailer lights not working at all, flickering lights, or intermittent functionality. You might also notice a burning smell from the fuse box area or experience blown fuses related to trailer lighting.
How do I know if my trailer relay is bad?
A simple test involves swapping the suspect relay with an identical, known-good relay from a non-critical system (like the horn). If the trailer lights then work, the original relay was likely faulty. Multimeters can also be used to test relay continuity and resistance.
Can I use a relay with a higher amperage rating?
While a higher amperage rating generally won't harm your system, it's best to match the original specifications. Using a relay with a significantly lower rating can lead to overheating and failure.
Are trailer tow relays universal?
No, trailer tow relays are not universally interchangeable. They vary in pin configuration, voltage, and amperage ratings. Always check your vehicle's specifications or the original relay for compatibility.
How often should trailer tow relays be replaced?
Trailer tow relays are designed for long-term use and typically do not have a scheduled replacement interval. They should be replaced only when they fail or show signs of malfunction.