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Q: horn set off on 2005 Saturn Vue

1st occurance, horn just went off while driving vehicle. I disconneted the battery. I thought it was the relay sensor. I purchased a new one. I connected the battery again. But it still goes on. I have original security system no changes.
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You would have to trace the wiring diagram for your car from the horn to the relay to the horn push button to see where the fault is. You need a wiring diagram specific to your car and a volt/ohm meter. Autozone have some popular workshop manuals for free on line once you register (for free) on their website http://bit.ly/autozone_repair_info. There is also a company that independent auto repair shops buy their information from that the same information inexpensively to do it yourselfers. The information is year make and model specific repair procedures, service bulletins, component locations, wiring diagrams ect.... Alldata is very easy to navigate http://bit.ly/AllData_Repair_Manuals_Online
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