Easily check the health and functionality of your automotive relays with the Relay Tester . Designed for fast, accurate results, this tool provides clear LED indications to confirm whether a relay is functioning correctly.

Features

  • Quick Testing – Provides instant go/no-go results with RED/GREEN LED indicators.

  • 4 & 5 Pin Compatibility – Works with the most common automotive relays.

  • Accurate Diagnosis – Checks relay coil, pin configuration, contact closure & opening time, and consistency.

  • Battery Powered – Connects directly to a car battery (11V–15V).

  • Durable & Reliable – Perfect for mechanics, DIYers, and auto repair shops

How It Works

  • 1. Connect the power leads to the car battery --black alligator clip to negative 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 pin relay,select"4 pin" on the tester.If it's a 5 pin relay, select"5 pin"on the 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. Tester will light the RED LED if the unkonwn relay is not the same to the most of common automotive relaysor the pin of the unknown relay is destroyed.

  • 7.Tester will open and close the relay 10 times for testing the time to contacts closure and opening if the pin configuration of the relay is right. Tester will light the RED LED immediately if the time is overtime.

  • 8. Tester will check the consistency of the relay after testing the time to contacts closure and opening ten times. Tester will light the GREEN LED if the test passed, if not light the RED LED.

  • 9. Disconnect power leads from the car battery and remove relay from the tester.

  • Attention

  • Works with 12V car batteries (11V–15V).

  • Best for relays with coil resistance above 20 ohms.

  • Package Includes

  • 1 x Car Relay Tester

Buyers must read: please confirm whether the part number or photo of the product matches your original before purchasing

Important Notice

  • 1. As a responsible seller, we ensure that we only sell functional and high-quality products.To this end, we send them after testing the complete functionality of all parts.
  • 2. We provide clear images for measurement as much as possible. Please check as much as possible to ensure that the project is what you need.
  • 3. Due to differences in computer screens, actual items may have slight color differences from the listed images. Thank you for your understanding.
  • 4. Please check the OE number in the pictures listed above and ensure that your car is on our compatibility list.
  • 5. Please compare our product pictures with your old pictures to ensure that our product is the same as your original product.
  • 6. If you are unsure, you can contact us via eBay message before purchasing, and we will check and reply to you as soon as possible within 24 hours.

Return Goods Policy

  • ◆ If you want to make any returns, exchanges, or refunds, please contact us in advance via eBay message. Please contact us, and we will actively provide you with a solution.
  • ◆ If the product is damaged or defective upon arrival, please do not open the packaging and take photos. Contact us immediately, and we will provide you with a solution to the problem.

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