Horn Button Question
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Elder User
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Thanks HIO, this is all brand new equipment, both the column and rag joint have just been installed. The PO had black button strapped to the old column. I am going to pick up a new horn relay and a new horn contact.
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Elder User
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Well I've been trying to figure out why the horn keeps grounding out every time I attach the center button.
In case there is anyone having this same issue, this is what I've learned. There are two contact brushes in the horn circuit, one under the steering wheel in the turn signal assembly, and the second above the steering wheel and below the horn button.
The trick to getting the horn to work only when you press it is to carefully ground down the brush contact under the horn button until there is about 1/8 clearance
In case there is anyone having this same issue, this is what I've learned. There are two contact brushes in the horn circuit, one under the steering wheel in the turn signal assembly, and the second above the steering wheel and below the horn button.
The trick to getting the horn to work only when you press it is to carefully ground down the brush contact under the horn button until there is about 1/8 clearance
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
Likes: 787
From: Simi Valley, CA
Well I've been trying to figure out why the horn keeps grounding out every time I attach the center button. 
In case there is anyone having this same issue, this is what I've learned. There are two contact brushes in the horn circuit, one under the steering wheel in the turn signal assembly, and the second above the steering wheel and below the horn button.
The trick to getting the horn to work only when you press it is to carefully ground down the brush contact under the horn button until there is about 1/8 clearance
In case there is anyone having this same issue, this is what I've learned. There are two contact brushes in the horn circuit, one under the steering wheel in the turn signal assembly, and the second above the steering wheel and below the horn button.
The trick to getting the horn to work only when you press it is to carefully ground down the brush contact under the horn button until there is about 1/8 clearance
A horn button is not the same as the horn ring, because the horn button only covers the center of the steering wheel hub.
Notice the rubber piece between the nylon retainer and the three screws in your pic. The horn button does not have it, because it's this:
C0DZ-13A813-A .. Horn Blowing Ring Pressure Pad / Reproduced = 1961/65 F100/250 2WD; 1966 F100 4WD; 1967/70 F100/250 2WD/4WD & F350.
Over time, the pad either flattens out or disintegrates. When either occurs, the horn will no longer blow.
Plus, the horn ring coil spring (C0DZ-13A807-B) is different than the horn button coil spring (C0DF-13A807-B).
The horn brush, horn brush insulator, nylon retainer and the horn relay are the same for both.
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Elder User
Joined: May 2017
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Throughout this thread, you describe the horn button, then you post a pic of the steering wheel, the horn brush, the horn ring and its related parts.
A horn button is not the same as the horn ring, because the horn button only covers the center of the steering wheel hub.
Notice the rubber piece between the nylon retainer and the three screws in your pic. The horn button does not have it, because it's this:
C0DZ-13A813-A .. Horn Blowing Ring Pressure Pad / Reproduced = 1961/65 F100/250 2WD; 1966 F100 4WD; 1967/70 F100/250 2WD/4WD & F350.
Over time, the pad either flattens out or disintegrates. When either occurs, the horn will no longer blow.
Plus, the horn ring coil spring (C0DZ-13A807-B) is different than the horn button coil spring (C0DF-13A807-B).
The horn brush, horn brush insulator, nylon retainer and the horn relay are the same for both.
A horn button is not the same as the horn ring, because the horn button only covers the center of the steering wheel hub.
Notice the rubber piece between the nylon retainer and the three screws in your pic. The horn button does not have it, because it's this:
C0DZ-13A813-A .. Horn Blowing Ring Pressure Pad / Reproduced = 1961/65 F100/250 2WD; 1966 F100 4WD; 1967/70 F100/250 2WD/4WD & F350.
Over time, the pad either flattens out or disintegrates. When either occurs, the horn will no longer blow.
Plus, the horn ring coil spring (C0DZ-13A807-B) is different than the horn button coil spring (C0DF-13A807-B).
The horn brush, horn brush insulator, nylon retainer and the horn relay are the same for both.
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Ford Parts Specialist
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From: Simi Valley, CA
8th Gear
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Horn Relay question
I installed a new headlight wiring kit in my 1966 F100. I do not see where the horn relay connects. I don't see where it would have connected to the old wiring harness. Horns and the relay were missing on this truck when I bought it. Any help would be greatly appreciated.
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johninraleigh
1961 - 1966 F-100 & Larger F-Series Trucks
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Apr 17, 2007 04:20 AM