HOW TO TEST A RELAY (PROFESSIONAL METHOD) Today I’m teaching how to test an automotive relay step by step using a multimeter and 12V power. 🔹 Relay terminals explanation • 85 & 86 – Coil (control circuit) • 30 & 87 – Load (power circuit) 🔹 Testing procedure 1️⃣ Check coil resistance between 85 and 86 2️⃣ Confirm no continuity between 30 and 87 when relay is OFF 3️⃣ Apply 12V to the coil (85 & 86) 4️⃣ Listen for a click sound 5️⃣ Check continuity between 30 and 87 when relay is ON ✅ If it click
2:19
HOW TO TEST A RELAY (PROFESSIONAL METHOD) Today I’m teaching how to test an automotive relay step by step using a multimeter and 12V power. 🔹 Relay terminals explanation • 85 & 86 – Coil (control circuit) • 30 & 87 – Load (power circuit) 🔹 Testing procedure 1️⃣ Check coil resistance between 85 and 86 2️⃣ Confirm no continuity between 30 and 87 when relay is OFF 3️⃣ Apply 12V to the coil (85 & 86) 4️⃣ Listen for a click sound 5️⃣ Check continuity between 30 and 87 when relay is ON ✅ If it click
6.4K views8 months ago
FacebookIssah Lampard Umeme
How to check faulty relay Actual testing using continuity tester #technician #DIY #electrician #relay #control #Power #switch #wiring #engineering #electrical | Electricians Guide
0:40
How to check faulty relay Actual testing using continuity tester #technician #DIY #electrician #relay #control #Power #switch #wiring #engineering #electrical | Electricians Guide
63.4K viewsSep 10, 2025
FacebookElectricians Guide
How to Test a Relay with Digital Multimeter & Power Supply
0:59
How to Test a Relay with Digital Multimeter & Power Supply
8.1K viewsJul 4, 2024
YouTubeTechBERTO Electronics
How to Test a Relay in Seconds! ⚡
0:58
How to Test a Relay in Seconds! ⚡
7 views1 month ago
YouTubeArt of Electronics
Quick Relay Test Using 9V Battery Guide
0:29
Quick Relay Test Using 9V Battery Guide
3.5K viewsSep 5, 2025
TikTokautocoolph
How to test a bad and good relay.#engineering #tips
0:56
How to test a bad and good relay.#engineering #tips
38 views3 weeks ago
YouTubeHUD ENGINEERING SOLUTIONS
How to Check a Relay | Easy Method to Know Relay Is OK or Faulty
1:01
How to Check a Relay | Easy Method to Know Relay Is OK or Faulty
72 views8 months ago
YouTubeMEP Tutor
1:20
How to test a relay #electronics #relay # #inverterrepair
184 views2 months ago
YouTubeVoltix Dynamix
0:44
Relay Test – Method 2! 🔥 Another Easy Way to Test a Relay
186 views1 month ago
YouTubeArt of Electronics
0:31
Never Replace a Relay Without Testing First #carmaintenance #hack
1.1K views4 months ago
YouTubeEngine Method Car Care
2:00
HOW TO EASILY CHECK AUTOMOTIVE RELAYS
11.7K viewsAug 22, 2025
YouTubeEnthuseYOU
0:51
How to check relay bad or good
820 viewsSep 26, 2024
YouTubeAutomotive knowledge power
0:16
How to test starter relay direct troubleshooting
15.3K views5 months ago
YouTubeSamiana Works
0:10
How To Check A Relay With Your Phone! - 😉 #mechanic
1.7K views3 months ago
YouTubeFalcon's Garage
1:33
How To Test 12v DC Relay.#shorts #electronic
1.6K viewsJul 19, 2025
YouTubePCB Hacks
1:00
BAD RELAY!? Secret OLD SCHOOL Mechanic Test W/O Fancy Tools
1K views5 months ago
YouTubeTS Mobile Mechanic
3:01
AC Not Working? Diagnose & Replace a Bad Relay
156.4K views6 months ago
YouTubeTaddy Digest
0:11
Fuel Pump Relay Test – How to Check a Bad Fuel Pump Relay in a Car #engineparts #enginecomponents
3.3K views1 month ago
YouTubeCAR HITECH 007
0:34
Fix Car A/C Quickly: Check the Relay First
1.6K views3 months ago
TikTokstl00746
0:18
😱SaveYour Compressor – Diagnose the Relay Correctly#viral #acrepair #hvac #ytshorts #acservice#yt#ac
1.1K views4 months ago
YouTubeAC Technicians.
0:53
Starter Relay vs Starter Motor | Don't Misdiagnose This Common Problem
718 views2 months ago
YouTubeJMC Automotive Equipment
0:51
1-Minute PDC Samus A100 Plus Relay Test: Tell if It's Good or Bad Instantly #PDCSamusA100Plus #Re...
550 views3 months ago
YouTubeady servis
0:59
Fix Bad Fuel Pump Fuse & Relay: Easy Car Repair Guide #shorts
107 views4 months ago
YouTubePuro Mobile Repair Service (Hack Channel)
1:04
Refrigerator Thermostat & Starter relay Replacement | Fridge Not Cooling Fix #shorts
5.9K views5 months ago
YouTubeU Global tech
0:08
Faulty Fuel Pump Fix: Car Cranks But Won’t Start — 4s Solution
5.6M views3 months ago
TikTok3d.mechanic0
0:40
Mechanics are PRAYING you never find out about this tool... 🤫💸 Stop paying $150 just for them to look at your car. 🛑 Check your relays yourself in 60 seconds. Green = Good 🟢 Red = Garbage 🔴 Who else is tired of getting overcharged at the shop? 👇😤 #mechanicsecrets #carhacks #scamalert #diyrepair #moneyhacks
1.6M views9 months ago
TikTokaria.bonni
0:51
X-431 PAD5 LINK HD | How to Perform A/C Relay Actuator Test on 2020 Sany C8 | LAUNCH #vehicle #hd #heavyduty #AutomotiveTools #CarTech #MechanicLife #DiagnosticTools #LaunchTech #smart #fyp #mechanic #launchtech #431 #launchx431 #x431
462.2K views5 months ago
TikToklaunch_diagnostictools
0:50
Understanding Automotive Relay Issues
571.8K views8 months ago
TikTokgrace.presley66
0:40
DIY Car A/C Repair Tips Without Going to Mechanic
516.5K views11 months ago
TikTokolifer.sfshop
2:36
Subaru Forester Restoration! 🔥 | Car Restoration
160.6K views3 months ago
TikTokmattieflips
See more
Static thumbnail place holder