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How to Easily Test a Relay

Model: (Various brands) Various
Part: Fuse box

Video tutorial

In this video, you will see a very simple method to test the relays in your vehicle using a 9V battery. The relay has several pins (usually 4 or 5); in this example, they are pins 85 and 86. Take the battery, connect the positive terminal of the battery to terminal 85 of the relay, and then connect the negative terminal of the battery to terminal 86 (the polarity to activate the coil is usually not critical for a basic test, so if you don't hear a 'click', try reversing the connections on 85 and 86). If the relay is functioning, you will hear a clear and distinct 'click' as soon as the battery terminals touch the pins; this test only verifies if the electromagnet works, it does not test the ability to conduct high current through its power contacts (which usually occurs through terminals 30, 87, and 87a).


Posted on 30 March 2026 by ScegliAuto


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How to Remove the Rear Seat of a Hyundai Tucson?

To remove the rear seat of a Hyundai Tucson, follow these steps. Start by moving the front seats to their most forward position to gain space. Next, locate the release lever on the underside of the rear seat, near the floor. Press this lever down while pulling the seat upwards to unlock it from the anchor pins. Once unlocked, tilt the seat upwards and forwards to remove it from its position. Repeat this process for both sides of the rear seat. Be careful of any electrical cables or components that may be connected to the seat during removal. Once the rear seat is removed, the disassembly is complete.

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by ScegliAuto

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