ESI 194 Super Relay Buddy® – 12V Relay Tester

7+ Amp Load | Green/Yellow/Red LED Results | Tests 6 Relay Types

The ESI 194 Super Relay Buddy is a next-generation 12V relay tester that applies a full 7+ amp load to identify failing or weak relays—especially those that only fail under load. Designed for techs who want fast, reliable relay testing, it delivers pass/fail/caution results via a tri-color LED system and automatically runs the relay through 10 test cycles.

This tool is ideal for diagnosing automotive, heavy-duty, marine, RV, and equipment relay circuits.

Key Features:

• Applies full 7+ amp load to relay contacts—finds relays that fail under stress

• Tri-color LED indicators:

  • Green: Good

  • Yellow: Pass with caution (some voltage drop)

  • Red: Fail

• Tests 6 types of common 12V relays

• Automatic 10-cycle relay test

• Fast, easy, and repeatable diagnosis

• Powered by vehicle’s 12V battery

• Supports both 4- and 5-pin relay formats

Specs:

• Relay Compatibility: 6 standard 12V types

• Load Applied: 7+ amps

• Power Source: Vehicle’s 12V battery

• LED Result Indicators: Green / Yellow / Red

• Relay Pin Types Supported: 4-pin and 5-pin