Seller notes

1. Connect the power leads to the car battery --black alligator clip tonegative terminal, red alligator clip to positive terminal. 2. Tester is powered up when the LED illuminates in RED. 3. Check the relay before plugging into the tester. If it's a 4 pinrelay, select"4 pin" on the tester. If it's a 5 pin relay, select"5 pin" onthe tester. 4. Plug in the relay into one of the three receptacles. 5. Press the "TEST" button. 6. Tester will check the pin configuration of the unknown relay. Testerwil...

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