Continual horn blowing

djmair · Post by **djmair** » Sat Jul 14, 2012 11:49 am

New Member also new 2 year Trojan owner

1985 10 meter international convertible gas 454s

Started having problems with the port engine. Cruising for 3/4 of an hour at 2,700 rpms and lose power. Changed to electronic ignition, new fuel pump new filters, compression test. Mechanic scratching head? I decided to change coil and resistor. After the installation I was going to test run however prior to this and seeing as I was in the engine compartment decided to check battery fluid levels. Pretty good but added some liquid to 1 battery. Checked the bolts and tightened one but after I did the horn started sounding (very loud) Disconnected starboard battery leads and horn stopped however reconnecting starts horn again. Can't get it to stop, assuming it is an alarm of some kind don't want to move until I know what is causing this. Any ideas???????

Commissionpoint · Post by **Commissionpoint** » Sat Jul 14, 2012 12:51 pm

Good topic name for around here.

Check to see if your horn switch is buggered. Also put a continuity meter on the wiring to it and see if it isn't just a simple short.

k9th · Post by **k9th** » Sat Jul 14, 2012 3:37 pm

We all come from a long line of horn blowers.

Welcome aboard.

summer storm · Post by **summer storm** » Sat Jul 14, 2012 4:30 pm

Is this the navigation horn or a buzzer/alarm horn?

prowlersfish · Post by **prowlersfish** » Sat Jul 14, 2012 6:01 pm

summer storm wrote:Is this the navigation horn or a buzzer/alarm horn?

also is the key on or off ?

Torcan · Post by **Torcan** » Sat Jul 14, 2012 7:12 pm

prowlersfish wrote: also is the key on or off ?

That was my first thought

The horn will sound if the ignition key is on and the motor is not running.

Big D · Post by **Big D** » Sat Jul 14, 2012 8:11 pm

Welcome aboard. Wow, we're starting to get a lot of folks from Ontario, I like it. I'm thinking this sounds like engine alarm; if ignition switch is off, check the ignition switch itself, electrically, it may be shorted in the closed/run position. This would power up the ignition circuit and alarm would sound due to no oil pressure. Disconnect the ignition switch and hook up the battery again. Worth looking at.

If it is the boat horn, look for a shorted switch or relay, or you may have a high water alarm float that is stuck in the "on" position while you were messing around in the engine compartment.

prowlersfish · Post by **prowlersfish** » Sat Jul 14, 2012 9:25 pm

Good point on the high water alarm

djmair · Post by **djmair** » Mon Jul 16, 2012 9:31 am

Thanks for all the quick replys. High water valve was stuck in the up position.

Horn is now silent and I have learned one more thing about my boat.

That was so successful that I have to ask if anyone has had the stalling problem I mentioned?????