Horn Wiring

[CS72Roadster]

Horn is not working. Found a mess of wiring from previous owner under the hood. It appears a green wire runs from the relay to the horn and if I jump it to positive, the horn honks. Also, found a black wire that appears it should go to the relay as well. My question is; does the black wire go to the horn button on the steering wheel and does it complete the "ground" when the button is pressed. I think the relay is bad and have ordered a new one, but I am trying to understand the wiring on the horn in case there is more wrong.

Can anyone explain this to me?

Thanks,

CS

 

[JohnZ]

Yup, there are two plug-in connectors on the horn relay - one has the green wire (feeds 12V to the horns when the relay is engaged), and the other has a 20-ga. black wire, which goes through the outboard bulkhead connector and ends up at the horn button (grounds the horn relay coil, engaging the relay). When you push the horn button, that circuit is connected to the steering shaft, which grounds to the steering gear through a copper ground strap between the upper and lower halves of the rag joint.

 

[CS72Roadster]

Thanks, that is what i thought.

CS

 

[C3forME]

Yep my horn doesn't work either, haven't been able to figure it out so far. I'll check out your advise.

 

[CS72Roadster]

I found the problem on the horn. Inside the steering column, in the turn signal switch is another spring loaded contact for the horn (not talking about the one in the horn button itself). The little bitty spring was broken. I made a replacement and it blows now!


Thanks for your help,
CS