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Old 07-17-2014, 03:17 PM   #11
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Thanks Darren... would you know off hand if the Yellow is ground or the Blue & Green?
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Old 07-17-2014, 03:35 PM   #12
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Sorry I don't know off hand but there should only be 2 posts on the horn. It's the one not getting the 12V
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Old 07-17-2014, 04:16 PM   #13
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Yellow is the negative. Horn relay should be under the helm, start at the horn switch and trace the wire until you find it.
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Old 07-18-2014, 01:14 AM   #14
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Disconnect the horn, connect a 12v test light inline those wires. does it light brilliantly or dimmly?
If its bright, something is up your horn.
If its dimm, disconnect the ground from the test light. Connect it to a "good", perhaps straight to the battery.
Is it still dimm? If it is, you have a bad/low/power/hot wire.
If its bright, you have a bad ground back to your switch.
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Old 07-18-2014, 01:26 AM   #15
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Quote:
Originally Posted by jamanati View Post
Disconnect the horn, connect a 12v test light inline those wires. does it light brilliantly or dimmly?
If its bright, something is up your horn.
If its dimm, disconnect the ground from the test light. Connect it to a "good", perhaps straight to the battery.
Is it still dimm? If it is, you have a bad/low/power/hot wire.
If its bright, you have a bad ground back to your switch.

Good test procedure but I prefer to use a DVM (digital volt meter) and get real reading. Hard to tell a bright 10 V light from a 12V one.
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Old 07-18-2014, 11:27 AM   #16
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Thanks again, all, I will get a DVM, find the relay and clean and run a wire from the "yellow" terminal back to the battery and test again...

Cheers,
Simon
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Old 08-29-2014, 02:22 AM   #17
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Curious... it just started working again all on its own ... I guess it was a voltage issue after all?
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Old 08-29-2014, 11:35 AM   #18
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Quote:
Originally Posted by SimonM View Post
Curious... it just started working again all on its own ... I guess it was a voltage issue after all?

Probably either a poor connection or bad contacts in the horn switch or relay
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Old 11-16-2014, 08:34 AM   #19
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Hi Simon, how did you go, I have the same problem with my horn, I have replaced the switch and cleaned the wires still no joy
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Old 11-16-2014, 12:37 PM   #20
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Adrian see post #15 of this thread on how to proceed.
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