Are you looking for the best relay harness? Based on expert reviews, we ranked them. We've listed our top-ranked picks, including the top-selling relay harness.
We Recommended:
Bestseller No. 1
10 Pack - Bosch Style 12V DC 5-PIN SPDT Interlocking Relay Socket Harness Base (with Wires)
- User Manual available for download under Product Information Details
- Interlocking design for easy cable management & organization.
- Fits 5-Pin Bosch style SPDT relays.
- Heavy duty 14AWG wires for the main contact and pre-wired with 6" pigtail leads.
- Wire Specifications: Black - Ground (85), Red - VDC (30), White - Trigger (86), Yellow - Output N/C (87a), and Blue - Output N/O (87).; 10pc Included
SaleBestseller No. 2
Nilight - NI -WA 06 LED Light Bar Wiring Harness Kit - 2 Leads 12V On Off Switch Power Relay Blade...
- Universal fit: Compatible with all automobiles, boats and devices equipped with a 12 volt power source
- Circuit protection: Power relay-safety protection and conversion circuit. Blade fuse protects the circuit when overcurrent or short circuit occurs.
- Illuminated switch: 3 pin on/off rocker switch with red indicator light when truing on, easy to turn on or off, has been passed test of 5,000 times...
- Two available leads: With 2 sets of light output connectors for dual lighting fixtures less than 180W, the connection is more stable.
- Package include:1 x wiring harness kit, 1 x instructions.
SaleBestseller No. 3
5 Pack 40/30 AMP 12V DC Waterproof Relay and Harness - Heavy Duty 12 AWG Tinned Copper Wires, 5-PIN...
- Never go beyond its capabilities. Try to stay 10 to 15% below what the rate is for
- 12-volt 5-prong relay. Excellent water-repellent and dustproof ability, but not using it in water
- Be careful when inserting the relay into the socket. If you force it, you will bend the female connectors
- Primary leads use 12 a.w.g tinned copper wire. Coil leads use 16 a.w.g
- Nominal Coil Voltage: 12 V DC; Coil Power: 1.8 W; Coil Resistance: 80 Ω; Must Operate Voltage: 6~8 V DC; Must Release Voltage: 0.6~3.6 V DC; Maximum...
SaleBestseller No. 4
5 Pack - EPAuto 30/40 AMP Relay Harness Spdt 12V, 5-PIN SPDT Bosch Style
- 40A/30A high switching capability.
- Heavy-duty impact molded relay socket with 5 WIRES。White (common), Black (normally closed), and Yellow (normally open).
- Package Include: 5 relays + 5 relay sockets with wires.
- Safety UL Flame retardant 9" wires for the main contact.
SaleBestseller No. 5
Nilight 10014W LED Light Bar Wiring Harness Kit 14AWG Heavy Duty 12V 5Pin Rocker Laser On Off...
- Premium Quality: excellent electrical conductivity, outstanding bending performance, high temperature and melting resistant, longer lifespan
- Protective blade fuse: inline blade fuse prevents from overcurrent or short circuit. Three extra fuses, more scientific and reasonable
- Reliable power relay: made of Advanced materials and well conductive pins to ensure safety protection and conversion circuit
- Durable switch: high quality 5 pin on-off rocker switch with laser-etched pattern, simple to install and convenient to use
- Package include: 1 x wiring harness kit, 1 x 5 pin LED rocker switch, 1 x instruction
Bestseller No. 6
Innovited Universal relay wiring harness for all HID H1, H3, H4, H7, H8, H9, H10, H11, H13, 9004,...
- 40A/12VDC 30Amp Fuse SPST relay configuration
- Compatible with both 35W and 55W
- One relay harness powers both driver and passenger sides
- compatible with all HID single bulbs H1, H3, H4, H7, H8, H9, H10, H11, H13, 9004, 9005, 9006, 9007, 5202, 880, 884
- Includes 1 x HID Universal Single Beam Relay Harness
Bestseller No. 7
4 Pack - EPAuto 30/40 AMP Relay Harness Spdt 12V Bosch Style
- 40A/30A high switching capability.
- Heavy-duty impact molded relay socket with 5 WIRES。White (common), Black (normally closed), and Yellow (normally open).
- Package Include: 4 relays + 4 relay sockets with wires.
- Safety UL Listed 6" wires with pigtail leads for the main contact.
SaleBestseller No. 8
1 Pack 40/30 AMP 12V DC Waterproof Relay and Harness - Heavy Duty 12 AWG Tinned Copper Wires, 5-PIN...
- Never go beyond its capabilities. Try to stay 10 to 15% below what the rate is for
- 12-volt 5-prong relay. Excellent water-repellent and dustproof ability, but not using it in water
- Be careful when plugging the relay into the socket. If you push hard, you will bend the female connector
- Primary leads use 12 a.w.g tinned copper wire. Coil leads use 16 a.w.g
- SPDT relay: it has both normally open and normally closed terminals, terminal 87A is powered when the relay is inactive and switches the power to...
SaleBestseller No. 9
Nilight 50003R Automotive Set 5-Pin 30/40A 12V SPDT with Interlocking Relay Socket and Wiring...
- High switching capability: Normally open 40A/14V DC and normally close 30A/14V DC. Suitable for Nilight LED light bar wiring harness kit
- Premium quality: Durable relay and harness socket with 5 wires; Made by high-grade materials to ensure superior quality and long lifespan
- Male-female slot design: Unique male-female slot design, easy to connect the relay with harness socket, clean and neat after installation
- Easy wiring: The relay sockets come with different colors for loads/accessories, simple and convenient wiring
- Package include: 5 x relay and 5 x relay socket with wires.Fit type: Universal fit
SaleBestseller No. 10
Nilight 50023R 5 Pack 30A Fuse Relay car Truck Socket kit-30A Switch Harness Set-12V DC 4-Pin SPST...
- Upgraded Version - Automotive relays built in fuse socket included 30A blade fuses with heavy duty 14AWG wires for main contact. No need of a separate...
- Mounting Design Feature - The interlocking mounting design of unique male and female slot on each socket edge, connect relays together and manage...
- Easy Wiring - The relay sockets come with color-labeled wires for load/accessories convenient wiring. Black - Ground (85), Red - VDC (30), White -...
- Wide Application - Widely used in car keys power control, over-load protection, trunk release, polarity change, power door lock/actuator control,...
- Package includes: 5 relays, 5 relay harnesses, and 5x30A blade fuses.
SaleBestseller No. 11
Wiring Harness 2 Lead, Nirider 12V 40A Rock Switch Relay Fuse Nylon Wiring Harness Kit for LED Light...
- OVERVIEW - Nirider Nylon Wiring Harness Kit is designed to wire and operate up to two 200W auxiliary lights (Max 400W total). Harness complete with...
- NYLON MATERIALS - The high-tensile nylon jacket offers superior strength and flexibility, it can handle daily wear and tear, ensuring long-lasting...
- APPLICATIONS - Compatible with all vehicles, powersports, boats, and devices equipped with a 12V power source. Easy to set up, fit for most of LED...
- SAFETY & DURABILITY - Heat-resistant, no need to worry about over-current or over-temperature conditions. Waterproof design for durability, relay uses...
- BOX COME WITH - 14.7ft 2 lead wiring harness, on/off rocker switch, plug-in style 40A relay, ATO style 30A fuse, male and female fully insulated...
Bestseller No. 12
MICTUNING 12V Fuse Relay Switch Harness Set - 30A ATO ATC Blade Fuse, 5 Pin SPST Automotive...
- Upgraded Version - Automotive relays built in fuse socket with included 30A blade fuse, no need of a separate fuse holder, saving space and money....
- Easy Wiring - The relay sockets come with color-labeled wires for loads/accessories convenient wiring. Black - Ground (85), Red - VDC (30), White -...
- Neat Mounting Design - The interlocking design of unique male-female slot on each socket edge, easy to connect all relays together, offering clean and...
- Good Construction - 12V DC (Max@14V DC) and 30A High Switching Capability. Bosch style 4-Pin SPST (Single Pole Single Throw) Relay. Metal mounting...
- Wide Application - Wide range of use, greatly used for car lights, fog lamps, wiper, starter, fans, speakers, traction control systems, etc
Bestseller No. 13
MICTUNING MIC-B1002 LED Light Bar Wiring Harness, Fuse 40A Relay On-off Waterproof Switch
- MICTUNING MIC-B1002 wiring harness kit with Waterproof Red on/off toggle switch and easy to install.
- Details Makes Perfect:adopt flexible strand copper wire,up to 180 watt load capacity.It is universal fit for any 7" 10" 12" 20" 30" 40" light bars...
- Great Construction:40A Power Relay and Inline Blade Fuse for multiple safety protection.With 2 lights output connections,it can hook with 2 led work...
- 10FT Extendable Wiring Harness:up to 10ft of wiring that is plenty of length to put it where you want.
- CAUTIONs: We recommend professional installation,pls let professinal installer to wire the harness kit; If let the wire short circuit,the harness...
Bestseller No. 14
4-PIN 40/30 AMP 12 V DC Waterproof Relay with Harness - Heavy Duty 12 AWG Tinned Copper Wires, 1...
- 12 awg tinned copper wires for Pin 30, Pin 87. Length: 5.1in
- 16 awg tinned copper wires for Pin 85, Pin 86. Length: 5.1in
- 12v dc waterproof 4 wire relay (max 14v). 40 amp / 30 amp High switching capability
- Excellent waterproof and dustproof ability, high quality in any weather conditions
- Nominal Coil Voltage: 12 V DC; Coil Power: 1.8 W; Coil Resistance: 80 Ω; Must Operate Voltage: 6~8 V DC; Must Release Voltage: 0.6~3.6 V DC; Maximum...
Bestseller No. 15
IRHAPSODY 80/60 AMP 12V DC Relay and Harness, Heavy Duty 12 AWG Tinned Copper Wires, 5-pin SPDT...
- Safety Warning: never go beyond its capabilities, try to stay 10 to 15% below what is rated for
- Please make sure you are making tight connections, (especially on the load wires)
- 12-volt dc relay (max 14V). 80a/60a high switching capability
- Pin Specifications: 30-VDC (red), 85-Ground (black), 86-Trigger (white), 87-Output /O (blue), 87a-Output N/C (yellow)
- 12awg + 16awg tinned copper wires. Electrical conductivity, corrosion resistance, and oxidation resistance are stronger
Bestseller No. 16
ONLINE LED STORE 6 Pack 4-Pin 12V Bosch Style Fused Relay Switch Kit [Interlocking Harness Socket...
- Built in fuse socket with included 30A blade fuse with heavy duty 14AWG wires for main contact.
- Bosch style 4-Pin SPST (Single Pole Single Throw) Relay.
- 12VDC (14V Max) and 30A High Switching Capability.
- Wire Specifications: Black - Ground (85), Red - VDC (30), White - Trigger (86), Blue - Output N/O (87).
- Set includes 6 relays, 6 relay harnesses, and 6 blade fuses.
Bestseller No. 17
GOOACC - G-RE6 6 Pack Automotive Relay Harness Set 5-Pin 30/40A 12V SPDT with Interlocking Relay...
- HIGH SWITCHING CAPABILITY: 5-Pin SPDT (Single Pole Double Throw) 30/40 A Relay.
- INTERLOCKING RELAY SOCKET: The relay socket harness base is interlocking designed for easy cable management and organization.
- GREAT QUALITY: The durable relay and heavy duty relay socket with 5 wires are made by high-grade materials to ensure superior quality.
- WIRE INSTRUCTION: Black - (85), Red - (87a), White - (86), Yellow - (87) and Blue - (30).
- PACKAGE INCLUDE: 6 relays & 6 relay sockets with wires
Bestseller No. 18
IRHAPSODY 4 Pin 40/30 AMP 12 V DC Relay and Harness - Heavy Duty 12 AWG Tinned Copper Wires, Bosch...
- 12 awg tinned copper wires for Pin 30, Pin 87. Length: 5.1in
- 16 awg tinned copper wires for Pin 85, Pin 86. Length: 5.1in
- 12-volt relay (max 14-volt). 40 amp / 30 amp High switching capability
- Nominal Coil Voltage: 12V DC; Coil Power: 1.8W; Coil Resistance: 80Ω
- Must Operate Voltage: 6~8V DC; Must Release Voltage: 0.6~3.6V DC; Maximum Applied Voltage: 15.6V DC
SaleBestseller No. 19
KASLIGHT H4 Relay Harness 1Set 2 Headlight Harness H6054 7x6 6054 Headlight H4 Relay Harness Toyota...
- This 1set 2-headlights h4 headlight relay harness Fixes cars with 2 pcs H4 plug headlamps, such as 7x6 led headlights. Problems like Dim Headlights,...
- 【IMPORTANT NOTICE】As Toyota Pickup and Toyota Tocoma use a double ground which leads to the headlights not work or only one beam work, this...
- 【YOUR VEHICLE NEEDS THIS】Perfectly match KASLIGHT H6054 H5054 H6054LL 6014 6052 6053 7X6 led headlights vehicles like Toyota, Jeep Pickup, Tacoma,...
- 【IMPORTANT NOTICE】If your socket pin is not standard, KASLIGHT H4 9003 HB2 Wiring Harness is needed
- 【Also fixes】: Overloading the Headlight Switch, Overheating Plugs. If you are upgrading to LED Bulbs or are having trouble with your 7"x6", 4x6",...
Bestseller No. 20
![1 Pack 5-Pin 12V Bosch Style Waterproof Relay Kit [Harness Socket] [12 AWG Hot Wires] [SPDT] [30/40...](https://m.media-amazon.com/images/I/51gr46HT3vL._SL160_.jpg)
1 Pack 5-Pin 12V Bosch Style Waterproof Relay Kit [Harness Socket] [12 AWG Hot Wires] [SPDT] [30/40...
- User Manual available for download under Product Information Details
- Waterproof construction & heavy duty 12AWG wires for the main contact.
- Bosch style 5-Pin SPDT (Single Pole Double Throw) Relay.
- 12VDC (14V Max) and 40A/30A High Switching Capability.
- Wire Specifications: Black - Ground (85), Red - VDC (30), White - Trigger (86), Yellow - Output N/C (87a), and Blue - Output N/O (87).
Having trouble finding a great relay harness?
This problem is well understood by us because we have gone through the entire relay harness research process ourselves, which is why we have put together a comprehensive list of the best relay harnesss available in the market today.
After hours of searching and using all the models on the market, we have found the best relay harness for 2023. See our ranking below!
How Do You Buy The Best Relay Harness?
Do you get stressed out thinking about shopping for a great relay harness? Do doubts keep creeping into your mind?
We understand, because we’ve already gone through the whole process of researching relay harness, which is why we have assembled a comprehensive list of the greatest relay harness available in the current market. We’ve also come up with a list of questions that you probably have yourself.
John Harvards has done the best we can with our thoughts and recommendations, but it’s still crucial that you do thorough research on your own for relay harness that you consider buying. Your questions might include the following:
- Is it worth buying an relay harness?
- What benefits are there with buying an relay harness?
- What factors deserve consideration when shopping for an effective relay harness?
- Why is it crucial to invest in any relay harness, much less the best one?
- Which relay harness are good in the current market?
- Where can you find information like this about relay harness?
We’re convinced that you likely have far more questions than just these regarding relay harness, and the only real way to satisfy your need for knowledge is to get information from as many reputable online sources as you possibly can.
Potential sources can include buying guides for relay harness, rating websites, word-of-mouth testimonials, online forums, and product reviews. Thorough and mindful research is crucial to making sure you get your hands on the best-possible relay harness. Make sure that you are only using trustworthy and credible websites and sources.
John Harvards provides an relay harness buying guide, and the information is totally objective and authentic. We employ both AI and big data in proofreading the collected information.
How did we create this buying guide? We did it using a custom-created selection of algorithms that lets us manifest a top-10 list of the best available relay harness currently available on the market.
This technology we use to assemble our list depends on a variety of factors, including but not limited to the following:
- Brand Value: Every brand of relay harness has a value all its own. Most brands offer some sort of unique selling proposition that’s supposed to bring something different to the table than their competitors.
- Features: What bells and whistles matter for an relay harness?
- Specifications: How powerful they are can be measured.
- Product Value: This simply is how much bang for the buck you get from your relay harness.
- Customer Ratings: Number ratings grade relay harness objectively.
- Customer Reviews: Closely related to ratings, these paragraphs give you first-hand and detailed information from real-world users about their relay harness.
- Product Quality: You don’t always get what you pay for with an relay harness, sometimes less, and sometimes more.
- Product Reliability: How sturdy and durable an relay harness is should be an indication of how long it will work out for you.
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