Automotive Relay Tester - 12V 4-Pin/5-Pin Car Diagnostic Tool with Alligator Clips
Specifications & Compatibility
Voltage Range: 11V-15V (suitable for standard 12V car systems)
Relay Type: Supports 4-pin and 5-pin automotive relays
Coil Resistance Requirement: >20 ohm
Dimensions:
Tester: 4.33in/110mm (L) × 2.24in/57mm (W) × 1.06in/27mm (H)
Alligator Clips: 2.95in/75mm (L) × 1.18in/30mm (W)
Wire Length: 89cm/35in
Core Components & Design
Dual-Purpose Interface: Accommodates both 4-pin and 5-pin relays, with a switch to toggle between modes.
LED Indicator: Lights up and emits a click sound when a relay is functioning normally, providing instant visual/audio feedback.
Insulated Alligator Clips: Red (positive) and black (negative) clips with strong bite force, ensuring secure connection to the car battery.
Durable Wiring: Thick red/black wires resist wear and tear, suitable for repeated use in engine bays.
Usage Method
Connect Power: Attach the red alligator clip to the car battery’s positive terminal and the black clip to the negative terminal.
Insert Relay: Place the relay into the corresponding 4-pin or 5-pin slot (switch the toggle as needed).
Test: Press the “TEST” button. A lit LED and audible click indicate the relay is working; no response means the relay is faulty.
Features & Benefits
Quick Fault Diagnosis: Identifies bad relays in seconds, eliminating guesswork in car electrical repairs (e.g., AC, lighting, or starter system issues).
User-Friendly Operation: No technical expertise required – ideal for both professional mechanics and DIY car enthusiasts.
Cost-Effective: Prevents unnecessary relay replacements by verifying functionality before repairs.
Applicable Scenarios
Auto Repair Shops: Streamlines relay testing for efficient troubleshooting of electrical systems.
Personal Vehicle Maintenance: Enables DIYers to diagnose issues like non-functional headlights, AC compressors, or starter relays.
Car Electronics Debugging: Essential for verifying relay integrity in custom wiring or restoration projects.
This relay tester is a must-have tool for anyone working on car electrical systems, offering speed, simplicity, and reliability in diagnosing relay faults.
Package Includes:

1 × 12V Car Battery & Relay Tester

Please note that if the product is not available in our stores in US, we will ship it from EU or Türkiye or from China. If this is not suitable for you, please inform us. Note that if it is not available in US, the shipping will remain the same specified and expected arrival period will be 5 business day difference, thank you for understanding

Automotive Relay Tester - 12V 4-Pin/5-Pin Car Diagnostic Tool with Alligator Clips
Specifications & Compatibility
Voltage Range: 11V-15V (suitable for standard 12V car systems)
Relay Type: Supports 4-pin and 5-pin automotive relays
Coil Resistance Requirement: >20 ohm
Dimensions:
Tester: 4.33in/110mm (L) × 2.24in/57mm (W) × 1.06in/27mm (H)
Alligator Clips: 2.95in/75mm (L) × 1.18in/30mm (W)
Wire Length: 89cm/35in
Core Components & Design
Dual-Purpose Interface: Accommodates both 4-pin and 5-pin relays, with a switch to toggle between modes.
LED Indicator: Lights up and emits a click sound when a relay is functioning normally, providing instant visual/audio feedback.
Insulated Alligator Clips: Red (positive) and black (negative) clips with strong bite force, ensuring secure connection to the car battery.
Durable Wiring: Thick red/black wires resist wear and tear, suitable for repeated use in engine bays.
Usage Method
Connect Power: Attach the red alligator clip to the car battery’s positive terminal and the black clip to the negative terminal.
Insert Relay: Place the relay into the corresponding 4-pin or 5-pin slot (switch the toggle as needed).
Test: Press the “TEST” button. A lit LED and audible click indicate the relay is working; no response means the relay is faulty.
Features & Benefits
Quick Fault Diagnosis: Identifies bad relays in seconds, eliminating guesswork in car electrical repairs (e.g., AC, lighting, or starter system issues).
User-Friendly Operation: No technical expertise required – ideal for both professional mechanics and DIY car enthusiasts.
Cost-Effective: Prevents unnecessary relay replacements by verifying functionality before repairs.
Applicable Scenarios
Auto Repair Shops: Streamlines relay testing for efficient troubleshooting of electrical systems.
Personal Vehicle Maintenance: Enables DIYers to diagnose issues like non-functional headlights, AC compressors, or starter relays.
Car Electronics Debugging: Essential for verifying relay integrity in custom wiring or restoration projects.
This relay tester is a must-have tool for anyone working on car electrical systems, offering speed, simplicity, and reliability in diagnosing relay faults.