horn doesn't work how do I fix it?
You need to find what has failed, disconnect the horn and jumper wire it just make sure the horn is good, then get a test light and check the horn fuse, if it checks good then check to see if you get voltage and ground at the horn, if you don't then check the horn relay, listen for a click when you push the horn button, if no click check relay for power and the grounds both negative and switched from the horn button, if all of those check good then replace the horn relay, if not repair the bad circuits.
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