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TRUE MODS 5 Pack 5-Pin 12V Bosch Style Waterproof Relay Kit [Harness Socket] [12 AWG Hot Wires] [SPDT] [30/40 Amp] 12 Volt Automotive Marine Relays for Boats Auto Fan Cars

4.6 4.6 out of 5 stars 1,328 ratings

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5 Pack

Purchase options and add-ons

Contact Type Normally Closed, Normally Open
Current Rating 40 Amps
Brand ONLINE LED STORE
Operation Mode Auto,Manual
Coil Voltage 12 Volts

About this item

  • 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).
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TRUE MODS 5 Pack 5-Pin 12V Bosch Style Waterproof Relay Kit [Harness Socket] [12 AWG Hot Wires] [SPDT] [30/40 Amp] 12 Volt Automotive Marine Relays for Boats Auto Fan Cars
TRUE MODS 5 Pack 5-Pin 12V Bosch Style Waterproof Relay Kit [Harness Socket] [12 AWG Hot Wires] [SPDT] [30/40 Amp] 12 Volt Automotive Marine Relays for Boats Auto Fan Cars
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Price$24.95$9.99$9.99-17% $9.50
List:$11.50
$11.69$18.99
Delivery
Get it as soon as Sunday, Mar 31
Get it as soon as Sunday, Mar 31
Get it as soon as Sunday, Mar 31
Get it as soon as Sunday, Mar 31
Get it as soon as Sunday, Mar 31
Get it as soon as Sunday, Mar 31
Customer Ratings
Easy to install
4.7
4.4
4.7
4.6
4.6
Value for money
4.6
4.0
4.6
4.6
4.5
Water resistance
4.6
4.5
4.6
4.3
4.1
Sold By
OnlineLEDStore
OnlineLEDStore
CH SHUODI
OnlineLEDStore
Gebildet
OnlineLEDStore
contact type
Normally Closed, Normally Open
Normally Closed, Normally Open
Normally Closed
Normally Closed
Normally Closed
Normally Open
max switch current
40 amps
80 amps
30 amps
40 amps
40 amps
30 amps
coil voltage
12 volts
12 volts
12 volts
12 volts
12 volts
12 volts
operation mode
Auto,Manual
Automatic
Auto,Manual
Automatic

From the brand


Product Description

5pc 40/30A 5-Pin Waterproof Relay Kit
5pc 40/30A 5-Pin Waterproof Relay Kit

True Mods

"Transform Innovative Ideas Into Reality"

COMPLETELY PROTECTED

Losing your lights you flights halfway through a night-long trail ride or fishing trip is not an option. Our silicone sealed and shrouded relays are completely waterproof and fully prepared for installation in wet and water prone areas. Completely sealed and protected, your relays won’t suffer the damaging corrosion and accidental shorts that plague non-sealed relays. You’ve worked hard on your project, protect it with waterproof relays.

  • Waterproof construction.
  • Bosch style 5-Pin SPDT (Single Pole Double Throw) Relay.
  • 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).

40/30A 5-Pin Waterproof Relay Kit

40/30A 5-Pin Waterproof Relay Kit wire colors.

40/30A 5-Pin Waterproof Relay and plug pigtail.

40/30A 5-Pin Waterproof Relay Kit pigtail wires from bottom.

WATERPROOF

Relays mounted in water prone areas need extra protection to prevent shorts and corrosion. Our silicone sealed, waterproof relays protect your hard work and can be safely used on boats, construction equipment, or off-road vehicles.

PIGTAIL INCLUDED

Easier to remove, more secure, and better looking than the usual rat’s nest of wires and terminals, the included 6” pigtails and sockets clean up your wiring, shorten repair times, and simplify fault diagnosis.

SIMPLE MOUNTING

No relay box, no problem. The mounting tab quickly mounts your relays to your firewall, roll cage, fender, or switch box.

VERSATILE

More versatile than a 4-pin relay, 5-pin relays can be used as a single, normally open or normally closed relay, or in more complex setups, like a custom power lock and window build.

THE RIGHT TOOL FOR THE JOB

Bosch style relays are the standard relay in custom wiring projects and many stock automotive, marine, and machine circuits. These 12V 5-pin relays are rated to handle 30A on normally closed pin 87a and 40A on normally open pin 87. That’s more than enough capacity to handle most common repairs and projects.

SIMPLIFY YOUR WIRING PROJECT

There’s nothing worse than trying to pull the back terminal off a firewall mounted relay. Ditch the terminals and the needle-nose pliers with our included sockets and pigtail wiring. The sockets, with their interlocking sides, help keep your relays secure and orderly. And, the color-coded pigtail wiring makes it easier to identify and organize your wires during the install.

Size Image
Size Chart

Details & Specs

  • MPN: EPS178R
  • Nominal Coil Voltage: 12 V DC
  • Coil Power: 1.8 W
  • Coil Resistance: 80 ohm
  • Must Operate Voltage: 6~8 V DC
  • Must Release Voltage: 0.6~3.6 V DC
  • Maximum Applied Voltage: 15.6 V DC

What's Included?

  • (5) 5-Pin 40/30A Waterproof Relay
  • (1) Instruction Manual
  • (5) 12-16 AWG Waterproof Harness

Product information

Technical Details

Additional Information

Warranty & Support

Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditions here.
Product Warranty: For warranty information about this product, please click here

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TRUE MODS 5 Pack 5-Pin 12V Bosch Style Waterproof Relay Kit [Harness Socket] [12 AWG Hot Wires] [SPDT] [30/40 Amp] 12 Volt Automotive Marine Relays for Boats Auto Fan Cars


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Customer reviews

4.6 out of 5 stars
4.6 out of 5
1,328 global ratings

Customers say

Customers like the value, waterproofness, quality and performance of the relay. They mention that it works well, has a water-resistant seal and that it's well made. They also like the ease of installation, and appearance. However, some customers differ on wires.

AI-generated from the text of customer reviews

162 customers mention151 positive11 negative

Customers are satisfied with the performance of the relay. They mention that it works well, is a great product, and is able to perform its intended function. Some customers also mention that the relay itself is OK but they ended up using another better one in its place. Overall, most are happy with the product's performance.

"works good" Read more

"...Online LED store offered exactly what I needed and the system is working flawlessly...." Read more

"...Works great and I didn’t have to use a diode. My configuration uses two of the upfitter switches in the truck. The mounting bracket worked out nice...." Read more

"I do like this device, it does work well (when it's supposed to)...." Read more

139 customers mention119 positive20 negative

Customers like the quality of the relay. They say it's well constructed, has top quality heavy duty connectors and wiring, and is twice the quality as any automotive relay available at local parts houses. The relays are fairly robust and have a nice watertight base. The wire pigtails are high quality wire, the seals are silicone, and the cable leads are substantial.

"...Very much care and concern that the relay is WATERPROOF! Very good quality wiring to each of the position terminals, and just from observing one..." Read more

"This is a nice heavy duty relay.This relay comes with no info. Most of the pins #'s are covered in adhesive and are difficult to read...." Read more

"This is a really nice heavy duty relay. I put it in my 2017 Superduty to run my auxiliary backup lights with my upfitter switches...." Read more

"...The product came quickly and appears to be great quality. The wiring is well insulated and is heavy gauge...." Read more

64 customers mention57 positive7 negative

Customers like the waterproofness of the relay. For example, they mention it has a tight, water-resistant seal, and the connector is waterproof. Some say that the base is watertight and the relay works well. Overall, most are satisfied with the waterproof design and connection.

"...Very much care and concern that the relay is WATERPROOF!..." Read more

"...The mounting bracket worked out nice. This relay is water proof as well, has a nice ribbed torturous path gasket...." Read more

"...I have not tested the waterproof capability but I can tell the relay seals very well and expect to have no issues whatsoever." Read more

"...I like the tight, water-resistant seal that this relay base provides -- this is really nice, given that this relay is installed just behind the..." Read more

46 customers mention40 positive6 negative

Customers find the installation of the relay to be easy. They mention that the pigtail harness included makes it simple to wire up, and the instructions are easy to follow. The relays are also easy to mount and use, and are perfect for RZR installs.

"This was easy to install, especially with the small mounting bracket on the back. does what i need it to" Read more

"...Works greatHas a convenient pigtail harness includedEasy to wire upCons:More expensive than it probably should be..." Read more

"Nice product easy install and works just fine...." Read more

"...The install was no problem and they look great, looks like they came from factory. There are lots of install options with these...." Read more

46 customers mention39 positive7 negative

Customers like the value of the relay. They mention that it works well and is a great value compared to Hella brand relays.

"...Great value for the money. Prompt delivery." Read more

"...Normally open or closed choices which makes them Versatile. Great value and have more for future projects." Read more

"...Plus, the price is right." Read more

"So worth the money. I installed HID lights on my Tahoe which requires a relay to provide a solid 12 VDC to the ballast...." Read more

12 customers mention12 positive0 negative

Customers are satisfied with the appearance of the relay. They mention that it looks and feels well, is arranged well in terms of wire color, and is water resistant. Some appreciate the excellent shape and the fact that it's water resistant as well.

"...The install was no problem and they look great, looks like they came from factory. There are lots of install options with these...." Read more

"Looks pretty good for water resistant." Read more

"...not wired it as of yet and did not put relay into service, but it looks great and I'm sure it will be awesome!" Read more

"great design, connector is waterproof, good current handling." Read more

27 customers mention14 positive13 negative

Customers are mixed about the wires. Some mention that the wire is a good size for vehicle wiring, and the leads are short. However, others say that the leads should be longer and the relay wires are too big for this type of application.

"...The impressive part was that the wiring was all tinned wire which is most helpful in a marine environment where I will be using this...." Read more

"...The only reason I didn't give them five stars, is the length of the attached wires...." Read more

"Arrived as expected. Appears to be well made. Lead lengths were sufficient for my needs...." Read more

"...Not all of the connections are used so I had to cut on of the wires off of the pigtail and it wasn’t as clean as I would have liked." Read more

11 customers mention6 positive5 negative

Customers are mixed about the fit of the relay. Some mention that it has a good fit, is easy to install, and has s tight, water-resistant seal. However, others say that it's almost too big to put under the motorcycle seat and has small and poorly aligned contacts.

"...I like the tight, water-resistant seal that this relay base provides -- this is really nice, given that this relay is installed just behind the..." Read more

"...Bigger than my old relays so they didnt fit in the right area, had to slightly relocate and extend the wires." Read more

"Good quality. Large casing with heavy gauge wire and thick insulation. Relay responds quickly with no faults - time will tell" Read more

"...It's actually quite a bit bigger. Wires are very large and stiff...." Read more

Heavy Duty, SPDT, "Type B", 14 volt, 40/30Amp relay. Read my review to see what Type B means (Pin Layout)
5 Stars
Heavy Duty, SPDT, "Type B", 14 volt, 40/30Amp relay. Read my review to see what Type B means (Pin Layout)
This is a nice heavy duty relay.This relay comes with no info. Most of the pins #'s are covered in adhesive and are difficult to read. So I will give the info here. Hopefully this will make your install easier.There are two types of 5 pin relays. Type A and Type B. This is a Type B relay. This is noted by the position of pin 30. I was able to determine this because, lucky for me just enough of the 3 was peaking out from behind the adhesive, to allow me to determine pin 30 location. It is sort of the key or primmer to decoding relay types. (12 volt planet has a nice article on 5 pin relays, if you want professional advice. I am just a guy on amazon, so take my advice for what it is worth)So I am wiring a reverse camera for my 2009 BMW E93 convertible. It did not come with a touch screen head unit, it came with an old school unit with only the basic digital screen. I updated my car with a 7 inch sat/nav with HD screen. Even though this car has pretty good visibility, the screen has backup camera capability, and Amazon offers a pretty cool back up camera that integrates into the tag light. So I figured why not. Well the reverse light is not a constant 12 volt, so I needed a relay to provide constant 12 volt power to the camera, and I use the reverse light as the on switch.My set up:Pin #30...constant 12 volt supply from a fused 15 amp supply line connected directly to my battery. BMW puts these in the trunk, right next to the tail light I am also tapping. (thanks BMW, easy peezy)Pin #85 Ground...attach this to any ground lug on the car bodyPin #86 Switch source... for my BMW this is the black /violet wire to my tail lightPin #87 the red wire on my camera*****Some relays switch position #85 and #86, but form what I understand this is immaterial, because it is just either end of a switch, and so they are reversible, but your application may vary. THe pin positions for #85 ad #86 are unreadable in this relay.The wires on this relay are much heavier gauge (12 & 16 gauge) than the 15 amp circuit I am supplying or the 2 amp draw I am using. But that is to be expected from a 40 amp relay. Just know when you buy butt end connectors, you will need them to fit a heavier gauge. Or by pass the wires and buy 6.3 mm female connectors to connect directly to the relay pins. This however will bypass the waterproofing built in to the male portion of this relay, with the actual wires on it.
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Top reviews from the United States

Reviewed in the United States on March 10, 2024
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5.0 out of 5 stars Heavy Duty, SPDT, "Type B", 14 volt, 40/30Amp relay. Read my review to see what Type B means (Pin Layout)
Reviewed in the United States on March 22, 2017
This is a nice heavy duty relay.
This relay comes with no info. Most of the pins #'s are covered in adhesive and are difficult to read. So I will give the info here. Hopefully this will make your install easier.
There are two types of 5 pin relays. Type A and Type B. This is a Type B relay. This is noted by the position of pin 30. I was able to determine this because, lucky for me just enough of the 3 was peaking out from behind the adhesive, to allow me to determine pin 30 location. It is sort of the key or primmer to decoding relay types. (12 volt planet has a nice article on 5 pin relays, if you want professional advice. I am just a guy on amazon, so take my advice for what it is worth)

So I am wiring a reverse camera for my 2009 BMW E93 convertible. It did not come with a touch screen head unit, it came with an old school unit with only the basic digital screen. I updated my car with a 7 inch sat/nav with HD screen. Even though this car has pretty good visibility, the screen has backup camera capability, and Amazon offers a pretty cool back up camera that integrates into the tag light. So I figured why not. Well the reverse light is not a constant 12 volt, so I needed a relay to provide constant 12 volt power to the camera, and I use the reverse light as the on switch.
My set up:
Pin #30...constant 12 volt supply from a fused 15 amp supply line connected directly to my battery. BMW puts these in the trunk, right next to the tail light I am also tapping. (thanks BMW, easy peezy)
Pin #85 Ground...attach this to any ground lug on the car body
Pin #86 Switch source... for my BMW this is the black /violet wire to my tail light
Pin #87 the red wire on my camera

*****Some relays switch position #85 and #86, but form what I understand this is immaterial, because it is just either end of a switch, and so they are reversible, but your application may vary. THe pin positions for #85 ad #86 are unreadable in this relay.

The wires on this relay are much heavier gauge (12 & 16 gauge) than the 15 amp circuit I am supplying or the 2 amp draw I am using. But that is to be expected from a 40 amp relay. Just know when you buy butt end connectors, you will need them to fit a heavier gauge. Or by pass the wires and buy 6.3 mm female connectors to connect directly to the relay pins. This however will bypass the waterproofing built in to the male portion of this relay, with the actual wires on it.
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Customer image
16 people found this helpful
Report
Reviewed in the United States on February 2, 2019
Size: 1 PackVerified Purchase
2 people found this helpful
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Reviewed in the United States on August 3, 2023
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Reviewed in the United States on April 21, 2018
Size: 1 PackVerified Purchase
Customer image
Ken
5.0 out of 5 stars Good Quality, Heavy Duty.
Reviewed in the United States on April 21, 2018
This is a really nice heavy duty relay. I put it in my 2017 Superduty to run my auxiliary backup lights with my upfitter switches.
With this relay installed I can run the auxiliary backup lights in two modes, ON when ever I want (even with the truck OFF) or make them go ON and OFF with the factory back up lights. Works great and I didn’t have to use a diode. My configuration uses two of the upfitter switches in the truck. The mounting bracket worked out nice. This relay is water proof as well, has a nice ribbed torturous path gasket.

7/16/20 Update: Two years now and still working, no issues. Thumbs up!
7/25/2023 Still going strong!
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7 people found this helpful
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Reviewed in the United States on July 18, 2019
Size: 1 PackVerified Purchase
Reviewed in the United States on May 29, 2019
Size: 1 PackVerified Purchase

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