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Old 04-25-2016, 12:01 PM   #3
LockDoc
The Older Generation


 
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Join Date: Aug 2006
Location: Montezuma, Iowa
Posts: 25,332
Re: Testing a horn replay????

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If the relay is working you should be able to hear it click when you press on the horn button. It is under the dash just to the Left of the steering column. If the relay is out of the truck hook +12v to the terminal that red wire is connected to and black wire to ground and you should hear it click. Green wire goes to horn/s.

LockDoc
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Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles

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