How to Bench Test Horn? - Team Camaro Tech
Electrical & Wiring Troubleshooting electrical.

 
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post #1 of 9 (permalink) Old Mar 22nd, 10, 07:20 AM Thread Starter
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Nick
 
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How to Bench Test Horn?

How is it done?

On my bench, I connected a battery charger to the horn, but nothing happened? I tried both horns. I am trying to determine if the horn is bad. A horn relay should not be needed. All a relay does is route 12v power to the target electronic device.

Any suggestions?

Thanks,

Nick

69 Camaro, 327, Auto, Console, Deluxe Interior, AC, Med Green, Exterior Style Trim, 3.08 rear end. Owned since 1983-1st car.
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post #2 of 9 (permalink) Old Mar 22nd, 10, 07:42 AM
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Kevin
 
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Re: How to Bench Test Horn?

Nick, sometimes a charger does not have enough amps to get a old horn to start vibrating due to scale/dirt etc on the coils. Try a battery and you should spray some wd-40 in the horn and move it to the center by rotating opposite from the spiral. Horns go bad with internal rust (specially the low notes). Banging it lightly might help loosen it too

Kevin


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post #3 of 9 (permalink) Old Mar 22nd, 10, 08:55 AM Thread Starter
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Re: How to Bench Test Horn?

Quote:
Originally Posted by KevinW View Post
Nick, sometimes a charger does not have enough amps to get a old horn to start vibrating due to scale/dirt etc on the coils. Try a battery and you should spray some wd-40 in the horn and move it to the center by rotating opposite from the spiral. Horns go bad with internal rust (specially the low notes). Banging it lightly might help loosen it too
I wil try that tonight . By the way, the battery charger was 10 amps. Also the horns have been sitting for over a dozen years.

Thanks,

Nick

69 Camaro, 327, Auto, Console, Deluxe Interior, AC, Med Green, Exterior Style Trim, 3.08 rear end. Owned since 1983-1st car.
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post #4 of 9 (permalink) Old Mar 22nd, 10, 09:46 AM
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Re: How to Bench Test Horn?

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Originally Posted by digi-69 View Post
I wil try that tonight . By the way, the battery charger was 10 amps. Also the horns have been sitting for over a dozen years.

Thanks,

Nick
Yup, same model I have. The 64 amps from a well charged battery can sometimes overcome the rust and scale, luck!

Kevin


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post #5 of 9 (permalink) Old Mar 24th, 10, 11:28 AM Thread Starter
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Nick
 
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Re: How to Bench Test Horn?

Well, I oiled up the horns and then hooked them up to a car battery with jumpers. Nothing happened. I even hit the large pin on the bottom of the horn to "break" loose the scale. Nothing happened. I think my horns are bad. They are orginal. I will test the leads with for continuation (volt/hom meter). But I am not opimistic.

Question: Would you recommend drillng out the rivets and try fixing the electrical connections? Or should I shelf them and buy replacements (junk yard)?

Thanks,

Nick

69 Camaro, 327, Auto, Console, Deluxe Interior, AC, Med Green, Exterior Style Trim, 3.08 rear end. Owned since 1983-1st car.
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post #6 of 9 (permalink) Old Mar 24th, 10, 11:43 AM
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Jeff
 
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Re: How to Bench Test Horn?

send them to Gary over at the horn works.
He can fix them for you like new.

http://www.classiccarhorns.com/
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post #7 of 9 (permalink) Old Mar 24th, 10, 10:35 PM
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Re: How to Bench Test Horn?

Or order the new membranes and rivets from Ecklers. Rebuild them yourself if you think you can. Its an easy saturday afternoon job.
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post #8 of 9 (permalink) Old Mar 26th, 10, 01:00 PM Thread Starter
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Nick
 
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Re: How to Bench Test Horn?

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Originally Posted by parkbrau View Post
Or order the new membranes and rivets from Ecklers. Rebuild them yourself if you think you can. Its an easy saturday afternoon job.
Tore apart the horns last night. Piece of cake. Found a site with photos on what to do.

I just cleaned up the insides and the horns worked, but they do not have the right sound. I hope the correct sound (and loudness) can be achieved with replacement vibrating discs. The kit is only $32 for both horns! That is more like it! This Camaro is nickel and diming me to death.

Here is the step by step site for the horn repair: http://www.corvettemagazine.com/tech...beep-beep.html

Parts: http://www.zip-corvette.com/ProductD...d-276b691e7437}&


Nick

69 Camaro, 327, Auto, Console, Deluxe Interior, AC, Med Green, Exterior Style Trim, 3.08 rear end. Owned since 1983-1st car.
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post #9 of 9 (permalink) Old Mar 26th, 10, 02:48 PM
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Glenn
 
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Re: How to Bench Test Horn?

Thanks for the info.--
Did not know anyone offered a rebuild kit for horns
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