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Old 07-29-2014, 09:17 AM   #1
Redherring OP
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1190 Adventure, Stebel Nautilus

I have installed the above on my bike, connected via a relay direct to the battery and using the OEM horn wires as the triggers for the relay, but I am getting a "general failure" message.

I have tested the horn and it works OK, and I can hear the relay clicking, so that seems to be working OK as well.

I am assuming the relay is confusing the ECU somehow?
Anyone any ideas before I strip it all out again?
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Old 07-29-2014, 02:31 PM   #2
alongat
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Can you describe how you wired the relay itself (which relay terminals to where, etc)? The relay (depending on brand) should have some markings on the bottom that label each post that you used.
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Old 07-29-2014, 02:32 PM   #3
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Also, where did you ground, where do you get the power supply for the relay, etc...
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Old 07-29-2014, 02:32 PM   #4
Stinkerbelle
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Try removing the battery for a few minutes (the classic turn off turn on reboot) to clear the error. Don't laugh - the Air Force do this on C17s & newer C130s!

The relay may need a resistor to match the reluctance of the horn, or it might need a diode to stop back emf or it may need a capacitor to smooth everything. My money is on the ecu seeing the comparatively low load of the relay as a short so put a resistor in series with the relay to fool the ecu into thinking the horn is still there. No idea what size but a 2k2 is always a good starting point and freely available. Easier to assess if you have a meter.

I should add, I have not tried this on mine...
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Old 07-30-2014, 07:06 AM   #5
Redherring OP
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Now sorted thanks. it was just a bad earth connection.
With the Wings exhaust, led foglights, and the loud horn, I might stand a chance of some of the pillocks in cars noticing me
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Old 07-30-2014, 07:17 AM   #6
alongat
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Glad you got it sorted out. Would you mind sharing pictures or description of the mounting location and whether or not you resorted to "splitting" the unit and separating pump from the horn itself?

Thanks
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Old 07-30-2014, 09:55 AM   #7
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Originally Posted by alongat View Post
Glad you got it sorted out. Would you mind sharing pictures or description of the mounting location and whether or not you resorted to "splitting" the unit and separating pump from the horn itself?

Thanks
I mounted it on the RH crashbar, hopefully far enough away from the exhaust to prevent it getting fried.
Aesthetically it is not too pleasing where it is but I couldn't find anywhere else where the horn would fit.
Photos attached with any luck!

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Old 07-30-2014, 12:39 PM   #8
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Thanks - I was hoping you discovered some unknown pocket of nothingness behind the fairing or something as I want to install mine hidden.
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Old 07-31-2014, 01:42 AM   #9
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Thanks - I was hoping you discovered some unknown pocket of nothingness behind the fairing or something as I want to install mine hidden.
Good luck with that, hope you're successful. Space is at a premium on this bike, I thought about splitting the unit, but couldn't even find a satisfactory space for that.
Almost gave up on fitting it but the OEM horn is worse than useless, so I accepted that I had to go with functionality instead of appearance.
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Old 07-31-2014, 04:02 AM   #10
alongat
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There is some space below the headlight in the snout where the original horn is though I am sure I would have to split the horn unit into its two components and believe it or not, there is quite a bit of room in the very back of the tail once the charcoal canister is removed but I am currently using that for the tools and other things (thread lock, rom straps, etc.) so I'm not sure I want to sacrifice any of that space - I'd rather keep it up front somewhere...
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