How to Choose a Relay Tester That Handles Modern Automotive Electrical Systems
The Lisle 60660 Deluxe Relay Test Set addresses a specific diagnostic need in today's complex vehicle electrical systems. Buyers should understand that this tool bridges the gap between basic multimeters and professional-grade scan tools, allowing you to test relay function, coil resistance, and circuit continuity without removing components from the vehicle. Its specific design for 4-pin and 5-pin ISO-style relays makes it particularly relevant for most vehicles built after the 1990s.
Key Considerations Before Buying
- Consider your vehicle's relay types: The Lisle 60660 is optimized for standard ISO mini and micro relays, so verify your car's relay configurations before purchase, especially for older or European-specific models.
- Evaluate your diagnostic workflow: This tool saves time by allowing in-circuit testing, but requires basic understanding of relay pinouts and a 12V power source, making it more suitable for DIYers comfortable with electrical diagnostics.
- Assess durability needs: Given its use in engine bays, look for robust construction like the Lisle's molded case and strain-relieved leads, which prevent wire fatigue during repeated probing of tight fuse boxes.
What Our Analysts Recommend
Quality relay testers feature clear, durable labeling for pin numbers (85, 86, 30, 87, 87a) and functions (coil, NC, NO), not just color coding. The integrated buzzer and LED indicators on the Lisle 60660 provide both audible and visual confirmation—a key feature for noisy environments. Proper kits include fused jumper leads to protect vehicle electronics during testing, a detail this set includes.
Electrical System Tools Market Context
Market Overview
The automotive relay tester market is bifurcated between simple continuity testers and advanced programmable units. The Lisle 60660 occupies a valuable middle ground, offering more functionality than basic test lights while remaining more affordable and user-friendly than professional bench testers. This category has grown as relay-dependent systems (like fuel pumps, cooling fans, and headlights) have proliferated in modern vehicles.
Common Issues
Common problems include flimsy alligator clips that damage relay terminals, vague instructions that don't explain ISO vs. Bosch pinouts, and lack of circuit protection that risks damaging vehicle ECUs. Many cheaper sets omit the fused power lead, creating a safety hazard when back-probing live circuits.
Quality Indicators
Look for products with OEM-style terminal connectors that match relay sockets without bending pins. High-quality sets include a detailed application guide explaining how to interpret buzzing patterns or LED sequences for different failure modes (open coil, welded contacts, etc.). The molded storage case of the Lisle 60660, which organizes leads and adapters, is a practical indicator of thoughtful design.
Review Authenticity Insights
Grade B Interpretation
A Grade B authenticity rating with an estimated 15% fake review rate for the Lisle 60660 suggests generally reliable feedback, but warrants careful scrutiny. This level indicates most reviews are from genuine users, though some may be incentivized or overly simplistic. The adjusted rating of 4.50/5 (down from 4.89/5) is still strong and likely reflects real-world performance more accurately.
Trust Recommendation
Focus on reviews that mention specific vehicle models (e.g., 'tested on my 2012 F-150 fuel pump relay') or describe actual diagnostic scenarios. Be skeptical of reviews that only praise packaging or shipping speed without detailing electrical testing use. The high volume of reviews (1902) means you can find substantial authentic feedback by filtering for verified purchases.
Tips for Reading Reviews
For technical tools like this, prioritize reviews that discuss failed tests or limitations—these often provide the most practical insights. Look for mentions of relay compatibility issues with specific car brands or notes about lead length being sufficient for reaching deep fuse boxes. Reviews comparing it to multimeter testing methods add particular value.
Expert Perspective
The Lisle 60660 represents a well-executed, purpose-built tool that fills a specific diagnostic niche. Its strong adjusted rating of 4.50/5 from a large review pool suggests it reliably performs its core function: quickly verifying relay operation in-circuit. The product's value lies in its time-saving potential—diagnosing a faulty relay in minutes versus hours of component swapping—which explains its popularity among both DIY enthusiasts and professional technicians who appreciate its straightforward design.
Purchase Considerations
This tool makes most sense for those who encounter intermittent electrical faults or perform regular vehicle maintenance, as its utility is situational. Consider your frequency of electrical diagnosis; if you rarely troubleshoot beyond replacing fuses, a basic test light may suffice. However, for anyone maintaining modern vehicles with multiple relay-controlled systems, the Lisle 60660's targeted functionality justifies its place in a tool kit.
Comparing Alternatives
Shoppers should compare the Lisle's fused lead design and included adapters against similar sets from OEM Tools or Performance Tool, noting differences in lead quality and case durability.
