12V Automotive Relay Tester 4/5 Pin Car Relay Checker Tool with LED Indicator
£3.60
Check the relay before plugging into the tester. If it's a 4 pin. Tester is powered up when the LED illuminates in RED. the tester. relay,select"4 pin" on the tester.If it's a 5 pin relay, select"5 pin"on.
