🔧 12V Car Relay Tester 4 & 5 Pin Automotive Diagnostic Tool with LED Indicator. 1 × 12V Car Relay Tester (Compatible with 4 & 5 Pin Automotive Relays). 💡 Why Choose This Relay Tester?. ✅Quick & Accurate Testing – Instantly checks relay health with clear RED (Fail) and GREEN (Pass) LED indicators.
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