Boat Horn Confusion

T

Tahoe-Q7

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Joined
May 26, 2025
Messages
4
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

Scott Danforth

Grumpy Vintage Moderator still playing with boats
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Jul 23, 2011
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50,559
check your grounds at the ground buss
 
C

cyclops222

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Mar 21, 2024
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Did the horn work for years ? Did you adjust the screw in the center of the horn to improve the sound ?
 
T

Tahoe-Q7

Recruit
Joined
May 26, 2025
Messages
4
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

Scott Danforth

Grumpy Vintage Moderator still playing with boats
Staff member
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Messages
50,559
Tahoe-Q7 said:
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,
Click to expand...
because your volt meter doesnt pull any current.
 
tpenfield

tpenfield

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