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Hey all!
I have a question, I own a 07 Frontier and I want to change my horn to a dual trumpets air horn. I have an alpex big blast air horn and having a problem installing it. It seems that I'm not getting the horn properly grounded. I am not sure if the Frontiers are "ground lead to horn button" or "hot lead to horn.
Can anybody help??!!
 

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I ran the factory horn wire to the switching terminal of the relay and used that to run the horn .
 

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I ran the factory horn wire to the switching terminal of the relay and used that to run the horn .
^+1
I actually run 3 Hella trumpets directly off em' so I'm even using the stock fuse.
 

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Im gunna connect a second relay and horn on the other side so others will def hear me lol
 
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