Klaxon-20 6v horn question

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BillM
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Klaxon-20 6v horn question

Post by BillM » Fri Dec 05, 2025 10:47 pm

Screenshot_20251205_214211_eBay.jpg
Anyone know about this horn. It has 3 terminals and is marked 6v.
I was going to try it out in the shop. But thought I better ask for some advice first. Image
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mtntee20
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Re: Klaxon-20 6v horn question

Post by mtntee20 » Fri Dec 05, 2025 11:01 pm

Hello Bill,

Looking at your photos, I see 2 terminals. All the Klaxon horns I have, or have seen, have only 2 terminals. Most of them have a third "screw" for adjusting the tone / volume of the horn. Removing the motor cover should show the wires from the terminals to the motor and the adjusting screw.

Good Luck

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DanTreace
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Re: Klaxon-20 6v horn question

Post by DanTreace » Sat Dec 06, 2025 12:19 pm

That's the biggest Klaxon, for a real loud sound, your T will ahooga like a Packard :). A deck mount was made for that model for ships too.

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Erik Johnson
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Re: Klaxon-20 6v horn question

Post by Erik Johnson » Sat Dec 06, 2025 12:55 pm

Somewhere, I have instructions for Klaxons where the motor armature is offset 90 degrees from the bell like yours. However, I'd have to find them.

I have a combination Klaxon. On my horn, the split male prongs 180 degrees from each other are the terminals. When new, there were corresponding female plugs that went on the split male prongs. I see at least one split prong your your horn.

On my horn, the knurled cap on top is a spring-loaded oiler cover - if you pull it straight up and it reveals a hole whereby you can add a couple drops of light weight oil (like 3-in-One or sewing machine oil). I presume your oiler is identical. If not, either twist or completely unscrew the cap.

To adjust the sound/tension on this style of Klaxon, loosen the jamb-nut between the motor housing and diaphragm/mechanism housing and rotate the motor housing clockwise or counter clockwise.
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Topic author
BillM
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Re: Klaxon-20 6v horn question

Post by BillM » Sat Dec 06, 2025 4:42 pm

Thanks for the replys guys I really appreciate it. Do you think it's 6v DC or 6V AC like a Magneto type?
I did add a few drops of oil in the spring loaded top cap.


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Re: Klaxon-20 6v horn question

Post by Erik Johnson » Sat Dec 06, 2025 5:29 pm

It's DC. Hook it up to a battery to see if it works.

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Re: Klaxon-20 6v horn question

Post by DanTreace » Sat Dec 06, 2025 5:32 pm

6 to 8 volts DC only.


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The best way is always the simplest. The attics of the world are cluttered up with complicated failures. Henry Ford
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Topic author
BillM
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Re: Klaxon-20 6v horn question

Post by BillM » Sun Dec 07, 2025 12:14 am

Unfortunately it doesn't work.... im going to take it apart and cleaneverything real good and see if it needs connections solderd
Together better. Im hopefully not going to need a rewind


Erik Johnson
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Re: Klaxon-20 6v horn question

Post by Erik Johnson » Sun Dec 07, 2025 4:37 pm

Before taking it apart, try decreasing the tension by loosening the jamb nut and rotating the motor an eighth of a turn at a time. I believe rotating it counter-clockwise decreases the tension.

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