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Horns stopped working, so I pulled old ones and they tested bad. Checked power to horn leads and tested fine when horn button pressed, However, horn leads still have a .28 volt reading when master switch is powered on and a .36 reading after entering start code on keypad. I suspected some other accessory was back feeding voltage through one of the ground bus (I'm no electrical genius, but I try), so I pulled stereo and amp leads to see if they too had the same low voltage condition, but they didn't. Checked voltage between under helm ground bus and horn terminals and didn't reproduce voltage reading. So my next hunch is a faulty keypad that's only "leaking" voltage on the horn button, but that's a spendy thing to just throw a part at and hope it fixes things. What should I check next? Can I test keypad in any way? Contacted horn manufacturer and they confirm that this small amount of voltage will fry the horns again if not corrected.
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Is it possible that voltage shows this only when the horn is no present? FWIW I have the same year and same boat and my horn was bad when I got it. I replaced it (that's not fun getting at it is it!?) two years ago and have had no issues with it. However, I also kill all power with a master switch after each use. -
I would think voltage would still be there with horns hooked up, i'll check next week. Incidentially, I did replace the horns a few weeks ago to see how long they will last and one of them is already fried.Comment
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