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12-Volt or 24-Volt Diagnostic Relay

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  • Features switch contacts to identify extreme resistance
  • Designed to test both 12-volt and 24-volt relays with ease
  • Three diagnostic codes indicate the relay test results
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Product Details

About This Product

This Relay Buddy is a quick go/no-go tester for the most common automotive relays. This new version Relay Buddy tests both 12-Volt and 24-Volt relays. If the relay fails the test, 3 different trouble codes will advise you of the possible causes for the failed relay.


  • Settable to 4 pin and 5 pin relay, uses vehicle battery for power
  • Green light if relay is good, red light if relay is bad, or 1 of 3 diagnostic codes
  • Switch contacts are loaded to detect excessive resistance
  • Relay Buddy operates the relay several times during each test session as it watches for consistency in every cycle
  • Return Policy

Product Information

Internet # 206868899

Model # ESI192

Additional Resources

Shop All Relay Buddy



FeaturesNo Additional FeaturesGeneral Part TypeVehicle Diagnostic Tool
Number of Pieces Included1Returnable90-Day
Shop Equipment Product TypeAutomotive Electrical Tester

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Customer Reviews

4.5 out of 5
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This is a good tool, saves time thank you....
This is a good tool, saves time thank you.
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Excellent ...
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The Boss
Really great tester works perfectly easy to use for all cars!!!!
    • Recommended
    Showing 1-4 of 4 reviews