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2006 Ford Taurus-the horn did not work/fuse was replaced/still does not work/what else could it be

it could also be the horn

it could also be the horn pad/switch, horn itslef or the wiring between them.
you'll need a test light and a helper, disconnect the horn, it's either behind the front grill or in the corner of the front fender, clip the clamp end of the test light to the neg.(-) batt. post and probe the horn wire you disconnected while helper presses the horn pad, if it lights, you need a new horn.
if it doesn't light swap the horn relay with another relay of same number in the relay center/fuse box, if it lights now you need a relay.
let us know what you fine so far, if it still doesn't light, we'll walk you thru testing the wiring, ect..

you get a chance to check it

you get a chance to check it yet?

It could also be the horn

It could also be the horn itself that's defective. Using the cars "Battery" as a power source, energize the horn, by giving it "Voltage" directly from the battery. If the horn doesn't "Sound", its defective and must be replaced.

check for power at the horn

check for power at the horn when the horn button is depressed.
check for a good ground at the horn as well.
If ground is good and still no power, suspect horn switch.

check out wiring diagrams at

Try for the step-by step guide along with pictures for this procedure.
Once at the site identify you car under the heading "current Vehicle"
Next click "Repair Info" on the tabs below the AutoZone logo.
At the middle of the page go to "Your Ride, Your Guide" and click "Become a member" set you username and password
Log-in and click "Vehicle repair guide"
Select the category for the repair needed.
Select (on the left) type of repair needed.
Page opens to your repair info.