Question about 2007 Subaru Impreza WRX Sport Wagon

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Horn not working

The horn has two connections, live and earth. The horn works if 12v is applied to the live connection. Hence the problem is not the horn or the earth connection. Can you tell me where to locate the live connections for the horn. Is there a relay involved?

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No relay involved should find live wire behind head deck just get ur self a test light 12 bucks earth @ crimp end and needle point @ other with light up test the red or yellow cables with key off insure earth crimp is on chassis etc and push needle end on wires 1 should light up

Posted on May 29, 2009

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Some models have single horns, others have two (or more).

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Im in the process of wiring an air horn to my 2008 dodge caliber se. ive used the existing power feed and earthed the horn via an additional wire to an earth point. the horn works fine whilst the engine...


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Diagram should be on the inside of the fuse box or relay cluster lid/cover. If Test light has 1 wire and a sharp tip? Yes, but only if you push the horn button too ;-)

My guess is that the horn lost its ground, but you can check this with the light. The horn only beeps when both GROUND and Pos 12v are present. The horn button gives the relay 12v to close, and the relay gives the horn 12v to operate. The ground is always connected.

Connect tester clipwire to 12v source (battery, headlight (has to be on) and touch its tip to metal of car. Does it light? Good. the tester is working and the 12v is a good source.

Touch one of the 2 horn connection or wires (poke it thru the plastic - why tip is sharp). Does it light? Touch the other, does it?

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Now have someone mash the horn button. Do you hear a tiny click? That is the horn relay. If not, look for the horn relay fuse and replace it. If you DID hear the click, the relay coil is good and is trying to switch 12v to drive the horn.

Now is time to locate and replace the horn fuse or the relay may have bad contacts. Look at the other relay part numbers in the cluster and see if there is a match for the horn one. Swap it out and try the horn.

Hope this all helps. To 'test' the horn, touch the dim side again anf listen for a scratching sound. That is the 12v going thru the tiny bulb in the tester (a resistance) and trying to drive the horn.

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Hi

Check the fuses.

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Good Luck !

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If you succeed in getting *****! once again, please give a FixYa Rating Please !
John.

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Hi

You need to check the live feed to the connection wire, at the horn, with a 12v test light, when the horn button is pressed.
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