Remove horn connector, use a voltmeter and have someone depress horn button while you measure voltage at harness connector, if you have 12V, then horn is bad, OR a bad ground.
If you do not have voltage at harness connector, then look at fuse, if OK, then check relay (depress horn button and relay should click).
Next possibility would be horn switch.
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Sunday, February 14th, 2010 AT 9:03 AM