Auto Relay Tester
Auto Relay Tester
⚡ Diagnose Electrical Problems in Seconds
🔧 Fix It Right the First Time
🚗 Professional Precision, DIY Simplicity
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Auto Relay Tester
Know Exactly What’s Wrong — Before You Waste Time or Money.
Stop guessing, swapping parts, or chasing electrical ghosts. The Auto Relay Tester instantly reveals whether a relay is good or faulty, so you can fix the real issue fast. With clear LED feedback and automatic relay detection, it gives you the confidence and precision of a pro mechanic — right in your own garage.
Test Any 12V Relay in Seconds — No Guesswork, No Hassle.
With automatic pin detection and instant LED indicators, the Auto Relay Tester takes the confusion out of electrical diagnostics. Just connect, test, and get clear results — green for good, red for bad. It’s the fastest way to pinpoint relay issues and keep your vehicle running smoothly.
Built Tough for the Garage — Engineered to Last.
Made from high-strength materials and designed to handle the wear and tear of daily use, the Auto Relay Tester delivers dependable performance every time. Whether you’re in a busy workshop or your own driveway, it’s a tool you can count on for years of accurate, trouble-free diagnostics.
Professional Accuracy — Even If You’re Not a Mechanic.
The Auto Relay Tester automatically detects 4-pin and 5-pin relays with pinpoint accuracy, giving you the same diagnostic confidence as a professional technician. No complex setup or technical know-how required — just plug it in, test, and trust the results every time.
The Ultimate Auto Relay Tester
Our Auto Relay Tester vs. other testers on the market.
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Others | |
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Instantly Detects Faulty Relays — No Guesswork Needed |
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Clear LED Feedback for Fast, Confident Diagnosis |
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Compatible with Both 4-Pin and 5-Pin Relays |
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Built to Withstand Real Workshop Conditions |
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Portable, Safe, and Ready for Any Job |
What our customers are saying...
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★★★★★
Caught the Problem in Under a Minute!
My truck kept stalling and I was about to replace the fuel pump — glad I didn’t! I hooked up this tester, and the red light came on instantly. Turns out it was a $10 relay, not a $200 repair. This little tool paid for itself the first time I used it.
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★★★★★
A Must-Have for Any Garage
I run a small repair shop and we test dozens of relays a week. This tool is a total time-saver. It’s quick, reliable, and tough — my guys dropped it twice and it still works perfectly. The LED feedback is super clear, no confusion at all.
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★★★★★
Makes Me Feel Like a Pro
I’m not a mechanic, but I fix my own car whenever I can. This tester made it so easy to check my relays without second-guessing. Plug it in, watch the light, and you know right away. Best tool I’ve bought in years.
Frequently Asked Questions
What types of relays can this tester check?
The Auto Relay Tester supports both 4-pin and 5-pin 12V automotive relays, making it compatible with most cars, trucks, motorcycles, and other 12V systems.
Do I need any special tools or knowledge to use it?
Not at all! Just connect the alligator clips to your car battery, plug in the relay, and press the test button. The LED lights instantly tell you if it’s working — no wiring diagrams or mechanic experience required.
How do I know if the relay is good or bad?
It’s simple:
- Green light = Relay is working properly
- Red light = Faulty or inconsistent relay
No guessing, no complicated readings.
Is it safe to use on any vehicle?
Yes — the tester is designed for any 11V–15V car battery and includes rubber-sleeved alligator clips for safe, secure connections. It won’t damage your relays or electrical system.
Can professionals use this in a workshop?
Absolutely. It’s built with high-strength materials and engineered to handle daily use in garages and service shops. Mechanics love it for its speed, reliability, and simplicity.