4 & 5 Pin Relay Tester for Car-Professional Auto Automotive w/ Battery Clips 12V
$25.60
Check the relay before plugging into the tester. If it's a 4 pin relay,select"4 pin" on the tester.If it's a 5 pin relay, select"5 pin"on the tester. Tester will light the GREEN LED if the test passed, if not light the RED LED.
