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It took days of going through more than a thousand customer reviews and conducting expert researches to narrow down the list. Weve included a comparison table below to give you a quick summary of our top 10 automotive relay board. Its followed by an in-depth review of each automotive relay board. Hopefully, once you are done reading this article, you will be well informed about automotive relay board and be able to select the right automotive relay board for you without any hesitations.

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Best automotive relay board reviews

1. 5 Pack 40/30 AMP 12 V DC Waterproof Relay and Harness - Heavy Duty 12 AWG Tinned Copper Wires, 5-PIN SPDT Bosch Style Automotive Relay

Feature

12 AWG tinned copper wires for Pin 30, Pin 87, Pin 87a. Length: 5.1 in
16 AWG tinned copper wires for Pin 85, Pin 86. Length: 5.1 in
12 V DC waterproof relay (max 14 V). 40 A / 30 A High switching capability
Excellent waterproof performance, high quality in any weather conditions
Nominal Coil Voltage: 12 V DC; Coil Power: 1.8 W; Coil Resistance: 80 ; Must Operate Voltage: 6~8 V DC; Must Release Voltage: 0.6~3.6 V DC; Maximum Applied Voltage: 15.6 V DC

2. MICTUNING 12-Slot Relay Box,6 Relays,6 ATC ATO Fuses Holder Block with 41pcs Metallic Pins for Automotive and Marine Engine Bay

Feature

Large Capacity Holder Box - A clean storage for many projects, tightly holds up to 5 Bosch-style 5pin relay and a RTT7121 4pin Relays, and 6 ATC/ATO blade Fuses
Special Mounting Legs - High and low legs are designed to snugly adhere to modern angular engine bays or trunk areas, for the flat surface, please add rubber pad yourself to level out the relay box (DIY installation)
2 Clip-Locks Cover - Easy access to the relays and fuses and securely keep them in place, allowing you to quickly maintain or replace the burnt one, also good protection from water splashes, dust and debris
Elegant & Durable - Made of PA6 rating Flame retardant shell, durable and safe, with precise cutouts of each slots and reserved an Arc-outlet on the edge, it keeps all your wiring tidy and good look as OEM factory manufactured
Universal Fitment - Suitable for ALL vehicles, 4X4 Offroad Jeep SUV UTV ATV RV Pickup Truck Trailer Camper Marine Boat, etc. Guarantee with 100% Satisfaction, please buy it with confidence and feel free to contact us if there's any question

3. 12V Auto Waterproof Fuse Relay Box Block [6 Bosch Style Relay Holder] [6 ATC/ATO Fuse Holder] Universal Relay Block Box for 12V Automotive Vehicles Cars Marine Boat Light Equipment

Feature

REMAP YOUR WIRING - organize, consolidate, and keep track of multiple independent circuits with six relay sockets and six fuse holders.
MULTI-TRERRAIN - Our unique "Z" shaped brackets make it possible to securely mount this waterproof relay box just about anywhere.
BUILT LIKE A TANK - Made from durable and dependable nylon 66 and sporting an IP65 waterproof rating, our relay box dosent understand the word "can't."
A COMPLETE KIT - Box, brackets, seals, terminals, we've included everything you will need to sucessfully install your new waterproof relay box.
MORE THAN A WARRANTY - We've got you covered with an industry leading two-year warranty and the best customer support in the business.

4. Niome 18-way Blade Fuse Holder + 10-way Relay Socket Box Dust-proof for Car Automotive Marine

Feature

The 18-way blade fuse holder is universally fit for all vehicles.
It's very easy to assemble and install.
All the necessary connecting pins are included in it. They are easy to hook up, and the design of cable opening hole for all wires allows you to entangle them via one main jacket, well-connnected and waterproof and dust-proof.
Material: ABS, metal

5. 12-Slot Fuse Relay Box,6 Relays Box, 6 ATC/ATO Fuses Holder Block with Fuses Relays and 41pcs Metallic Pins for Automotive and Jeep Boat Car Marine Engine Bay

Feature

Large Capacity Holder Box - A clean storage for many projects, tightly holds up to 5 Bosch-style 5pin relay and a RTT7121 4pin Relays, and 6 ATC/ATO blade Fuses
Special Mounting Legs - High and low legs are designed to snugly adhere to modern angular engine bays or trunk areas, for the flat surface, please add rubber pad yourself to level out the relay box (DIY installation)
2 Clip-Locks Cover - Easy access to the relays and fuses and securely keep them in place, allowing you to quickly maintain or replace the burnt one, also good protection from water splashes, dust and debris
ACCESSORIES INCLUDED- Metallic pins are included so you can effortlessly swap out relays and fuses from the back of the fuse relay box.
VERSATILE MOUNTING OPTIONS- Since most modern vehicles have angular/sloping engine bays or trunk areas, we engineered the mounting legs to snugly adhere to these surfaces; a rubber spacer is also included so you can mount the automotive relay box on flat surfaces too.

6. MNJ Motor 12-Slot Relay Box, 6 Relays, 6 ATC ATO Fuses Holder Block with 41pcs Metallic Pins for Automotive and Marine Engine Bay

Feature

LARGE CAPACITY HOLDER BOX - A clean storage for many projects, tightly holds up to 5 Bosch-style 5pin relay and a RTT7121 4pin Relays, and 6 ATC/ATO blade FusesNOTE: No fuses or relays included
2 CLIP-LOCKS COVER - Easy access to the relays and fuses and securely keep them in place, allowing you to quickly maintain or replace the burnt one, also good protection from water splashes, dust and debris
UNIVERSAL FITMENT - Suitable for ALL vehicles, 4X4 Offroad Jeep SUV UTV ATV RV Pickup Truck Trailer Camper Marine Boat, etc. Guarantee with 100% Satisfaction, please buy it with confidence and feel free to contact us if there's any question
SPECIAL MOUNTING LEGS - High and low legs are designed to snugly adhere to modern angular engine bays or trunk areas, for the flat surface, please add rubber pad yourself to level out the relay box (DIY installation)
ELEGANT & DURABLE - Made of PA6 rating Flame retardant shell, durable and safe, with precise cutouts of each slots and reserved an Arc-outlet on the edge, it keeps all your wiring tidy and good look as OEM factory manufactured

7. Youngneer 12v Relay Board Relay Module 1 Channel Opto-Isolated High or Low Level Trigger

Feature

12V 1 Channel Relay Module- This Relay Board provides a single relay that can be controlled by any12V digital output from your microcontroller.
Main Specification- Peak Load of NO Connector: AC125~250V/10A, DC28~30V/10A; Trigger Current: 5mA;The Module Operating Voltage:12V; 4pcs * 3.1 mm Fixed Bolt Hole.
Adopted SMD Optocoupler Isolation& jumper Set- The isolation circuit prevent damages to I / O port by relay switch current.The module has a jumper so you can set rather the unit state changes with high or low signal. Has screw terminals for relay (NC,C,NO) and for input; Coil +, coil - and trigger.
Wide Application-These 12v relay board works well with ARM /PIC /AVR /MCU/Raspberry/CNC machine/ PS4 etc.
Humanization Design On Interfaces- All interfaces can be directly wired out through the terminals.Fault-tolerant design;fault-tolerant design,even if the control line is broken, the relay will not operate.

8. Automotive Digital Timer Relay Board DC 12V 20A 1500W Relay Module with Dual Time Display, Timing Relay Switch ON-Off Control Support Cycle of time Time Delay for Car Vehicle (12V)

Feature

Digital cycle timer delay module with time ranging from 1 second to 999 hours, available for various application.(Notice: no out put Voltage)
The time relay delay Dual display: Red readout for practical value(PV); Blue readout for set value(SV);79mm*43mm-display panel; 71mm*40mm*24mm-cut out size.
Can be used in timing, delaying, cycle timing, intermittent timing, raft fishing machine, slow-down machine DIY, etc.
This relay switch is four-terminal wiring and setting by buttons, easy and simple for everyone to use it.
This 12V time delay relay can store the setting automatically. Please wait 6 seconds after finishing setting the data. The data set will be stored automatically after 6 seconds.

9. 12V Fuse Relay Box - JOYHO 12-Slot Relay Block, 6 Relays and 6 ATC/ATO Fuse Holder Block with 41pcs Metallic Pins for 12V Automotive Vehicles Cars Marine Boat Jeep Light Equipment

Feature

REORGANIZE YOUR WIRING - This large capacity relay box can safely store up to 5 Bosch-style 5pin relays, one RTT7121 4pin Relay and 6 ATC/ATO blade fuses.
2 CLIP-LOCKS COVER - Transparent plastic cover with push latch system, easy to operate, splash and dust-proof design. Adds extra protection to your fuse & relay against water splashes, dust and debris
PREMIUM QUALITY - Made of PA66 retardant material. It is mechanically strong, insulated, heat resistant and flame resistant. There will hardly cause any issue like produce fracture, deformation, combustion or short circuit phenomenon.
EASY TO SET UP - 41pcs metallic pins are included so you can effortlessly swap out relays and fuses from the back of the fuse relay box.
BUY WITH CONFIDENCE - If there's any question, please contact us, we will try to Guarantee with 100% Satisfaction.

10. 6 Gang Switch Panel, Niwaker Electronic Relay System Circuit Control Box Universal Waterproof Fuse Relay Box Touch Switch Box with Label Stickers for Truck ATV UTV SUV Car

Feature

6 GANG SWITCH PANEL - Operating voltage: 12/24V; Max power rating: 960 Watts. The 6 gang switch panel can help you control 6 LED lights & electrical accessories at the same time. You can customize your personal switch panel with 24pcs self-adhesive labels. The best way to clean up all the wiring and add a single panel to control everything.
QUICK & EASY INSTALLATION - Plug & play wiring harness make everything easy and save a lot of time. Clean and neat design, no complicated wiring, no need to cut a big hole on your vehicle. All the wires are color-coded to make it easy to distinguish them and install them as quickly as possible without worrying about jumbled wires.
SAFETY FIRST DESIGN - The integrated overload protection and thermal protection system will provide security for all connecting lights and accessories. Built-in fuse and relay, overvoltage protection, reverse polarity protection, overload protection. When the internal temperature exceeds 100C , these temperature protection relay and fuse box will automatically disconnect.
UNIVERSAL FITMENT - Smaller size switch panel and control box save more space and can be installed in any location you see fit, such as dash panel, dashboard, center console, overhead sunglasses holder, etc. Fit for all 12V-24V vehicles, can fit different types of truck, car, atv, utv, boat, off-road, motorcycle, etc.
BOX COME WITH - All in one design, no need to buy extra parts. 6 Gang Switch Panel + Circuit Control Box + 24Pcs Self-Adhesive Label + Switch Panel Brackets + Screw Tapes + Strapping Tapes + Wiring Harness + Installation Instructions. We provide two-year 100% quality assurance and 24H hassle-free after-sales service.

Conclusion

All above are our suggestions for automotive relay board. This might not suit you, so we prefer that you read all detail information also customer reviews to choose yours. Please also help to share your experience when using automotive relay board with us by comment in this post. Thank you!