C3 Horn grounding
Thread Starter
Burning Brakes
Joined: Oct 2009
Posts: 861
Likes: 79
From: Clifton VA
C3 Horn grounding
I am working on a 72. The steering coupler/rag joint needs to be replaced and I have 3 or 4 parts and pieces. I am a C2 person so my knowledge of C3s is limited. On a C2 the horn grounding for operation runs through the steering coupler/rag joint. So, if you don't have continuity through the rag joint, the horns will not work. The C3 rag joints I have are pretty rusty, I'm treating one of them now with Evaporust, but I have not been able to get continuity end-to-end testing with my VOM.
My question is does the C3 horns work like the C2, i.e., when you press the horn a ground is created to activate the horns and the grounding passes down the steering shaft and through the rag joint?
Thanks,
Don
My question is does the C3 horns work like the C2, i.e., when you press the horn a ground is created to activate the horns and the grounding passes down the steering shaft and through the rag joint?
Thanks,
Don
Le Mans Master
Joined: Aug 2006
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From: mount holly NC
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I am working on a 72. The steering coupler/rag joint needs to be replaced and I have 3 or 4 parts and pieces. I am a C2 person so my knowledge of C3s is limited. On a C2 the horn grounding for operation runs through the steering coupler/rag joint. So, if you don't have continuity through the rag joint, the horns will not work. The C3 rag joints I have are pretty rusty, I'm treating one of them now with Evaporust, but I have not been able to get continuity end-to-end testing with my VOM.
My question is does the C3 horns work like the C2, i.e., when you press the horn a ground is created to activate the horns and the grounding passes down the steering shaft and through the rag joint?
Thanks,
Don
My question is does the C3 horns work like the C2, i.e., when you press the horn a ground is created to activate the horns and the grounding passes down the steering shaft and through the rag joint?
Thanks,
Don
You can run a wire from one side of the upper rag joint to the lower side to make a ground.
Thread Starter
Burning Brakes
Joined: Oct 2009
Posts: 861
Likes: 79
From: Clifton VA
Thanks, that is what I was afraid of. What I have found working on C2 rag joints is that once they get pretty rusty, it is hit or miss with whether you can get continuity between the sides. And doing an externa wire like you suggest or a complete disassembly and rebuild is the only way to fix the problem.
Don
Don
Drifting
Joined: Feb 2013
Posts: 1,444
Likes: 367
I just was able to get my horn working because of a bad ground was the problem. 1ST time I ever fixed one. Next are the windshield wipers and that looks like a nightmare. I'm not sure if I will be able to get it or not but I'm going to try
