Boat Horn Confusion

[Tahoe-Q7]

Hello All,

I'm trying to troubleshoot the horn on my 2004 Tahoe Q7. If I remove the horn from the boat and connect it to a 12V supply, the horn works. Using a multi-meter, when I press the horn button with the power switch on, I see ~12V so I'm assuming the horn switch is working correctly and I'm getting the correct voltage to the horn. When I connect the horn to the correct leads and press the horn button with the power switch on, the horn clicks (sounds like a relay clicking) but the horn does not work. Is there something I'm missing in my troubleshooting?

Thanks in advance.

 

[Scott Danforth]

check your grounds at the ground buss

 

[airshot]

Corroded wires or connections.....

 

[cyclops222]

Did the horn work for years ? Did you adjust the screw in the center of the horn to improve the sound ?

 

[Tahoe-Q7]

Hello All,

Thanks for the replies. I will triple check all of my connections and grounds but if I had a bad connection or bad ground, why do I get 12v across both leads?

Thanks,

 

[Scott Danforth]

Hello All,

Thanks for the replies. I will triple check all of my connections and grounds but if I had a bad connection or bad ground, why do I get 12v across both leads?

Thanks,

because your volt meter doesnt pull any current.

 

[tpenfield]

You mentioned 'relay clicking' . . . perhaps there is a relay in the circuit . . . that is not working.