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Originally Posted by ScottH
Problem is I cant get it to work, it is a 72 c10 with a grant wheel. When I press on the horn button the horn relay clicks like it should.
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circuit from horn button is good
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If I use a circuit tester on the horn wire it lights up when I press the horn button.
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horn relay is good
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I have tried 4 other horns plus a brand new one and none work. Cleaned all grounds, even tried hooking each horn directly to the battery and none worked.
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Hard to believe 5 bad horns, but if you connect it directly across a
good battery and it doesn't work, it's gotta be a bad horn. (make sure your battery is good)
If not for that last test, I would suggest your core support (which the horns mount to) is not properly grounded.