11-18-2023, 11:57 PM | #1 |
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horn wiring
My horn is aftermarket, probably Chinese, and both wires are white that come out of the rear cover. I cut both wires before I realized they were both alike. Any suggestions as to how I can determine which is which to rewire it back.
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11-19-2023, 07:50 AM | #2 |
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Re: horn wiring
I would run jumper wires to horn and let the horn tell you. Not sure if polarity is a big deal. One way will be better than the other. Just rebuilt my old horn, that was what I did.
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11-19-2023, 07:51 AM | #3 |
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Re: horn wiring
Normally the connections are made inside the rear cover. Also, one is grounded when the horn button is pressed and the other is hot all the time. Ether wire can be the ground or hot. To verify, take the back cover off and look for clips inside. To double verify, assure that neither wire is grounded to the horn frame with an ohmmeter.
If you cut the wires you may need to lengthen them so that they will reach the connections inside the horn. Use a crimp connector and the ratching type crimpers. The ends of the wires inside the horn usually have a bullet type end so that they will insert into the clips.
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11-19-2023, 08:45 AM | #4 |
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Re: horn wiring
I have had the back cover off but neither wire is connected to a bullet clip. Both are soldered to a terminal that is wired to the brushes and the field windings. Like I said this is not a Ford horn, a reproduction probably made in China.
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11-19-2023, 09:10 AM | #5 |
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Re: horn wiring
The idea is to get battery to one brush, ground to the other. Shouldn't matter which polarity. The yellow harness wire comes direct from battery via the cutout, the other wire goes to the horn button which connects to ground.
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11-19-2023, 09:26 AM | #6 |
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Re: horn wiring
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To unsolder the landing of each wire and solder on another is not a big deal. As mentioned, if Hutchins, the "ground" of the horn is irrelevant, this usually being done in the wires. As in one Plus and the other Negative. As said, if you can figure the wiring at the landing, you can be sure. Try it on a 6v battery first. If it sounds like a dying cow, then you probably have the 12V version. They made both. Joe K
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11-19-2023, 11:07 AM | #7 | |
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Re: horn wiring
Quote:
I think it was more than the incorrect voltage tho, haha. I think more than one needed some attention. As stated above, I don't think the Horn's DC motor cares about polarity |
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11-19-2023, 12:44 PM | #8 |
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Re: horn wiring
Horn motors and starter motors don’t care about polarity !
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11-19-2023, 02:05 PM | #9 |
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Re: horn wiring
They turn the same direction regardless of the polarity. That is because both the field and the armature windings reverse polarity. If you want to change direction of the motor you have to change the polarity of the field or armature windings, but not both.
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A is for apple, green as the sky. Step on the gas, for tomorrow I die. Forget the brakes, they really don't work. The clutch always sticks, and starts with a jerk. My car grows red hair, and flies through the air. Driving's a blast, a blast from the past. |
11-19-2023, 02:28 PM | #10 | |
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Re: horn wiring
Quote:
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11-19-2023, 04:08 PM | #11 | |
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Re: horn wiring
Quote:
It usually takes a couple of tries to get the sound "right." When made correct, the contact wheel can rust a bit which in turn affects how much resistance the contact point offers to turning - more rust - more cow. A re-adjustment usually solves it - until the rust wears off and the horn "voice" gets wimpy. Joe K
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11-19-2023, 07:09 PM | #12 | |
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Re: horn wiring
Quote:
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11-19-2023, 08:47 PM | #13 |
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Re: horn wiring
The screen should pop out. You need the bell in place to hold the diaphragm against the rotating part. Try slitting the paint a bit at the outer perimeter of the screen. It was probably painted as an assembly and the paint will make it harder to remove. Joe K
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11-21-2023, 11:02 AM | #14 |
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Re: horn wiring
Motors made for high torque have a shunt wound field. Motors for light duty continuous operation are series wound. Shunt wound motors are not polarity sensitive but they do draw a lot of current. This is why they sound weak when the engine is idling. Current output of the generator is low at idle since it is trying to keep the ignition coil and what ever other electrical circuit is active at the time.
Series wound electric motors are polarity sensitive. Direction of rotation can easily be changed on them. |
11-21-2023, 11:35 AM | #15 | |
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Re: horn wiring
Quote:
Last edited by Y-Blockhead; 11-21-2023 at 11:47 AM. |
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11-21-2023, 08:02 PM | #16 |
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Re: horn wiring
[QUOTE=Y-Blockhead;2271330]
I agree a relay is best used to deliver full voltage for devices, but would 6 volts be sufficient to activate the coil? Polarity should not matter to activate the relay. Maybe a 6 volt relay is available. |
11-21-2023, 08:11 PM | #17 | |
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Re: horn wiring
[QUOTE=oldspert;2271450]
Quote:
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11-21-2023, 08:15 PM | #18 |
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Re: horn wiring
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