Still, it can fail depending on how often you use it. Horns rarely break down, they can last decades and can even outlive the life of the vehicle. Remember: The battery should be reconnected after replacing the relay – otherwise no current will flow.Ī broken horn could be the reason why you can no longer honk on your Ford Thunderbird. Be careful not to damage anything when removing the relays. Most relays are plugged in, but they can still be relatively tight. With this you can easily test whether the electromagnetic switch is actually the cause of the malfunctioning horn on your Thunderbird. Before starting the replacement, you must always disconnect the vehicle’s battery.Īs soon as you have identified the relay for the horn, you should check whether there is an identical relay in the box, typically you can use AC relay to test the horn relay. If you are lucky, the wiring diagram will be drawn on the facing. Typically relays are located in the engine compartment or under the steering wheel on the left-hand side. The information may be listed in your vehicle’s owners manual.
A horn relay is rectangular or square shaped with 3 or more legs at the bottom.įirst of all, you should find out where the horn relay is located in your particular model of Thunderbird. A bad relay can also be the cause of horn failure on your Ford Thunderbird. Relays are electromagnetic switches that are used to switch electrical loads on and off. It does not matter in which direction you insert the fuse. You must replace it with one of the same amperage and therefore the same color. If the metal strip is broken in the middle, the fuse has blown. To check the fuse, pull it out of Thunderbird’s fuse box using a fuse puller or needle nose plier and hold it against the light. If the fuse is blown, replace it with a new one with the specified amp rating. In case of a faulty fuse, the circuit is interrupted and the horn can not work.Ĭheck your Thunderbird’s owners manual or the fuse box cover to find the exact location of the fuse for the horn. The horn on Ford Thunderbird needs electricity to work.
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