SKU: 64411143084

12V Automotive Relay Tester – 4-Pin & 5-Pin Universal Tool

$19.85 $22.05
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Ships within 48 hours · Estimated delivery Jul 15 - Jul 20

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Description

12V Automotive Relay Tester – 4-Pin & 5-Pin Universal ToolTest & Diagnose Automotive Relays in Seconds Keep your vehicle running at its best with this 12V Universal Automotive Relay Tester. Compatible with both 4 pin and 5 pin relays, this compact diagnostic tool helps mechanics and DIY car enthusiasts quickly identify faulty relays without guesswork. Simply connect the battery clamps, plug in the relay, and get an instant result no more costly trips to the shop for simple relay diagnostics. Whether you're

Test & Diagnose Automotive Relays in Seconds

Keep your vehicle running at its best with this 12V Universal Automotive Relay Tester. Compatible with both 4-pin and 5-pin relays, this compact diagnostic tool helps mechanics and DIY car enthusiasts quickly identify faulty relays without guesswork. Simply connect the battery clamps, plug in the relay, and get an instant result — no more costly trips to the shop for simple relay diagnostics.

Whether you're troubleshooting a no-start condition, a failed fuel pump relay, or a malfunctioning horn relay, this tester gives you a fast, reliable answer right in your garage or on the roadside.

Made in Mainland China.

Key Features

  • ✅ Universal Compatibility: Works with standard 4-pin and 5-pin automotive relays used in most 12V vehicles
  • ✅ Battery Clamp Connection: Easy-to-use clamps connect directly to your vehicle's 12V battery for instant power
  • ✅ Circuit Detection: Quickly identifies open, shorted, or faulty relay circuits
  • ✅ Compact & Portable: Lightweight design fits easily in any toolbox or glove compartment
  • ✅ No Battery Required: Powered directly via the included battery clamps — no separate battery needed
  • ✅ Time & Money Saver: Pinpoint relay failures in seconds instead of spending hours on guesswork
  • ✅ Beginner Friendly: Simple plug-and-test operation — no advanced electrical knowledge required

Specifications

  • Operating Voltage: 12V DC
  • Compatible Relay Types: 4-Pin & 5-Pin Automotive Relays
  • Power Source: Vehicle battery via clamp leads
  • Battery Included: No
  • Country of Origin: Mainland China

Who Is This For?

This relay tester is ideal for:

  • DIY home mechanics and hobbyists
  • Professional automotive technicians
  • Auto repair shops needing a quick relay-check tool
  • Anyone dealing with electrical gremlins in their car, truck, or SUV

Related Automotive & Diagnostic Tools

Looking for more tools to keep your vehicle in top shape? Check out these related products:

  • Automotive Cables & Jump Starters
  • OBD2 & Vehicle Diagnostic Tools

Learn More About Automotive Electrical Systems

Understanding how relays work is key to effective vehicle diagnostics. Learn more from this trusted resource:

Frequently Asked Questions

Q: What types of relays does this 12V automotive relay tester support?

A: This universal relay tester is designed to work with standard 4-pin and 5-pin automotive relays commonly found in 12V vehicles, including cars, trucks, vans, and SUVs. It covers the most widely used relay configurations in the automotive industry.

Q: Do I need a separate battery to power this relay tester?

A: No! The relay tester is powered directly through the included battery clamps, which connect to your vehicle's 12V battery. No separate batteries are required, making it incredibly convenient to use anywhere your car is parked.

Q: Can a beginner use this automotive relay tester?

A: Absolutely. This tool is designed with simplicity in mind. Just connect the clamps to your 12V battery, insert the relay into the tester socket, and the tool will indicate whether the relay is functioning correctly or is faulty. No special electrical training is needed.

Q: What problems can this relay tester help me diagnose?

A: This circuit detector can help identify issues such as failed starter relays, faulty fuel pump relays, non-functional horn relays, AC compressor relay failures, and other common 12V relay-related electrical faults in your vehicle.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 64411143084

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4.2 ★★★★★
Based on 543 reviews
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Product Reviews
M
Verified Purchase
M.K.
Houston, US
★★★★★ 4
Durable, interesting, but not my dog's favorite.
Color: Purple, Size: Large (Pack of 1)
This is a pretty cool treat dispensing toy; the rubber it's made from is very thick and durable, and the irregular shape of it makes it more interesting for the dog. The opening of each compartment has little strips inside that makes the toy dispense treats pretty randomly. You can also snip them so they're shorter, to dispense treats easier. I snipped all of them in my toy, because my dog was having a hard time getting treats out, and I adjusted them several times to where now it's almost too easy to get the treats out. I just couldn't find a happy medium, and of course once you've cut them, you can't uncut them. The only real down side to this toy is that it collects dog fur and can get pretty gross pretty fast. Most of my dog's other toys stay relatively clean when she's using them, but between the material and the pattern and whatnot on the outside, this toy is just a gunk magnet. Fur collects in the little dips between "barnacles" and clings to the slots on the outside of the toy. My dog doesn't really mind, obviously, but I think it's a little gross. ;D My dog for whatever reason favors most of her other toys over this one; even when this is the only toy that still has treats left in it, she'll often ignore it. It's a very high quality toy, though.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 24, 2015
I
Verified Purchase
inventurous
Battle Creek, US
★★★★★ 5
Durable and Fun Diversion!
Color: Purple, Size: Large (Pack of 1)
At first I was a bit concerned as the toy is made of a fairly pliable rubber so I worried that my vizsla, who destroys most of his toys rather quickly, would destroy this one within hours. Luckily, I was able to quickly teach him that it's much more fun to carry and kick around, then to gnaw. So far it's been over a month that I've actually left this on the floor, and it shows very little signs of damage. Some treats have made a perpetual home in the large and medium sides of the toy, and it keeps him interested from time to time, as he'll just randomly pick it up and start kicking it around, or bring it to me in hopes of a game of fetch or a treat reload. One thing that definitely helped him fall in love with it was that I immediately (after washing) placed a variety of sizes of his favorite treats in the different globes. Some (kibble-sized) treats fell out easily and taught him that this was indeed a rewarding toy to play with, others took a little kicking and dropping, and some remain until they start to break apart from enough bouncing and licking, which keeps his attention. We have the large (for a 40-lb dog) and it suits him well as he can get his mouth around even the largest of the globes to carry it, while it has about a zero percent change of becoming a choking hazard, unless a piece breaks off, which seems unlikely so far. One does have to be somewhat careful playing fetch in the house, as it bounces somewhat unpredictably and has a bit of heft to it. Very pleasantly surprised to find that the rubber actually smells good, somewhat like bubble gum, as opposed to some other rubber toys that reek of chemicals. Overall, very happy with the durability, safety, and fun of this one, and wouldn't hesitate to replace it with the exact item if it is ever lost or damaged.
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Reviewed in the United States on November 24, 2014
E
Verified Purchase
E. Ricciardi Trundy
Boise, US
★★★★★ 3
3.5 Stars -- Sturdy but Limited
Color: Purple, Size: Large (Pack of 1)
I got the Barnacle toy in size Large for my ~45 lb mutt. She enjoys food toys, and I wanted to find one sturdy enough that I felt safe leaving her with when I left for work since she tends to destroy her toys quickly. First thing -- there's no way any dog is going to be able to destroy this. The "rubber" is super thick and a good balance of flexible and sturdy, so she can't do her favorite "pick at a weak edge and slowly disembowel it" trick. I've had it for a couple months now and it looks brand new. However, it isn't great for feeding her kibble. She eats 1 cup at morning and at night, and none of the compartments fits that comfortably. I don't really feel like dividing her food into 3 portions every day to split it between either. The bigger problem is the hole size, or rather the ratio of kibble-to-hole size. The holes are very big with rubber "fingers" inside to slow the food spill. I've still found that it tends to dump a fistful of kibble all at once, or not let anything go for a long time. This may have to do with my dog's "technique", as described below. Another problem is that since this has three separate chambers, this toy is not hollow and is surprisingly heavy. While my dog has no problems throwing a kong around (and I mean THROWING a kong around), the weight and asymmetrical shape makes it difficult to throw or roll, which is my dog's preferred way to use a food toy. This toy works best when a dog slaps it with her paws or picks it up and drops it, which may be why my dog gets frustrated with getting her food from it. What this toy is really great for, for us, is high value treats. If I am leaving at an unusual time and anticipate that she's going to fuss, I can put "the good stuff" in this toy and then she doesn't mind the struggle at all! The different size chambers make this especially nice if I'm breaking up odd sized or home made treats and want her to stay busy for a while. Since it's so sturdy, she can chew on it all she wants, but she has to do the work to get the treats. All in all-- this toy isn't great for my dog's daily feedings, but it's great for high value treats and a change of pace.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 2, 2015
W
Verified Purchase
Write Reviews
West Palm Beach, US
★★★★★ 5
Actually a challenge for my genius dog!
Color: Purple, Size: Large (Pack of 1)
I am pretty sure my dog owns every puzzle toy and treat-dispensing dog toy that exists, and he's able to figure most of them out in less than 5 minutes. Many last no more than 60 seconds before he's solved them. The Barncle, however, is actually a challenge for him! The Barnacle has three "compartments, " none of which are connected. All three have a rubber "mouth" that helps keep treats inside. The rubber "mouth parts" are very effective and make it quite challenging to get treats out once they've been placed inside. You can trim the rubber "mouth parts" to make it easier to let treats out, but I'm not doing that. I'm glad that it's not challenge! The Barnacle keeps my dog occupied for at least 30 minutes, which is a LONG time for my dog who usually has a "What next?" attitude towards toys. Th only "bad" thing about the Barnacle is that it's so hard to get treats out of, even for humans. Therefore, it could attract vermin if you're not careful to clean it out.
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Reviewed in the United States on May 20, 2025
V
Verified Purchase
Vanessa
Dallas, US
★★★★★ 1
OMG - DO NOT BUY - it smells like noxious poison.
Color: Purple, Size: Medium (Pack of 1), Color: Purple, Size: Medium (Pack of 1)
OMG DO NOT BUY!!!!!!!!!!! I didn’t think the reviews stating the noxious smell could be accurate - OMG OUR WHOLE HOUSE REEKS OF POISON. I LITERALLY FEEL LIKE I MAY BE SICK. OMG OMG OMG.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 11, 2026

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