relay tester CRT-707

Efficient Relay Testing for Automotive Professionals- This 12-volt automotive relay tester streamlines the diagnosis and testing of 4-pin and 5-pin relays, saving you valuable time and effort. Its intuitive design and clear LED indicators make it easy to identify relay operation issues, ensuring faster troubleshooting and repairs. Connect to Battery: Securely connect the black alligator clip to the negative terminal of a 12V car battery. Attach the red alligator clip to the positive terminal. The RED LED will illuminate, indicating power is on. Select Relay Type: Before plugging in the relay, check its pin configuration. Select "4 pin" or "5 pin" on the tester accordingly. Plug in Relay: Insert the relay into one of the three receptacles on the tester. Start Test: Press the "TEST" button to begin the relay test.