12V Automotive Relay Tester 4/5 Pin LED Car Diagnostic Relay Testing Tool

⚡ 12V Automotive Relay Tester. Quick Diagnostic Check for 4-Pin & 5-Pin Car Relays | LED Indicator Light. Pro-Grade Diagnostic Tool. ???? Diagnostic Display: Dual-Color LED (Green = PASS / Red = FAIL). Stop guessing and start diagnosing!