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I'm installing a new Painless harness in my '66 F100. My diagnosis has yielded that pressing the horn does not provide a ground out the 7-pin steering column connector to operate the horn relay. Either the horn switch is bad or it's not accessing a ground inside the steering column. There seems to be no ground wire into the steering column, so I assume the column is accessing ground through contact with metal body parts. Can I get to the switch by taking the steering wheel off? If so, how do you get the horn ring/button off the steering wheel?
See from the pic that the button that the horn ring is supposed to connect to seems to be recessed to the point that the ring cannot touch it. Is this the way it's supposed to look? If I ground that button, the horn does honk. Sorry this image is so big.