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Horn Relay is failing (switch is closing) perhaps due to cold weather. Take relay out and test in freezer to see if switch closes. Or, there is a short somewhere in the circuitry - especially look at the steering wheel horn switch, as that assembly moves and could have been chaffed.

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โˆ™ 2008-11-07 15:58:07
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Q: What could cause the horn to come on by itself?
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