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The horn on my truck has never worked since I bought it and I thought I'd start searching for answers. I've got power at the button when checked on the multimeter, continuity between the fuse and the button, and I've jumped each horn to the battery to make sure they work (and they do). What else am I missing here? I'd like to get it resolved on the stock wheel before buttoning up an aftermarket wheel in the future. Thanks!
Have you tested the horn relay on the fender apron, and make sure it is making a clean contact.
Then checked the fuse for the horn?
also trace the wire to make sure it has no bad spots in it.
coming from the horseshoe connector it will be the blue with a yellow stripe and then under the dash it should splice/ connect into a yellow wire.
Also check if the fuse link is still good.
Thanks so much. I'll check and test everything today. I'd bet it's the relay or fuselink that went out. I checked all fuses in the box for continuity yesterday and they were all good, so I feel like it has to be in front of the firewall somewhere.
X2 on the ground at the rag joint. When I got my truck, the horn didn't work. After I got it working, it soon stopped working again. This time I traced the break to the jumper wire on the rag-joint. Sure enough it was broken, So I made a new one and put it on, and restored operation once again.
I think my ground jumper wore out because the truck had no ground-strap from the engine to the cab...
If it's not the column ground, then it could be the relay. Mine was missing, so I got a modern three-post relay and socket out of a Windstar or something at the junkyard, and crimped some male spade terminals on the wires, and plugged it in.
I have been chasing an intermittent speed control gremlin and after seeing the post about a ground across the steering coupler..I thought what the hey..what have it got to lose. Installed the ground and so far so good on the gremlin being put to sleep. Thanks for the heads up as I might have never thought of checking there!
Hey everyone, just following up. I had a chance to address this issue today and HIO nailed it. Jumped a piece of wire from the box to the rag joint and the horn fired right up. I had checked continuity on the relay and it was good, but also made for a great time to clean up and grease the connections. Thanks for the help...again!
Thought I'd show my finished permanent jumper wire. It's a piece of 12 guage with two heat shrink ring terminals. I had to step drill one ring terminal out to 3/8" to fit the bolt that clamps the steering shaft. Then I finished it off with a couple of coats of liquid tape.
Thought I'd show my finished permanent jumper wire. It's a piece of 12 guage with two heat shrink ring terminals. I had to step drill one ring terminal out to 3/8" to fit the bolt that clamps the steering shaft. Then I finished it off with a couple of coats of liquid tape.
That's excellent news! And a thread resolution with pictures to boot!
Here's a bad one of mine which I really meant to capture and post before...
Originally Posted by Broncodude646
I have been chasing an intermittent speed control gremlin and after seeing the post about a ground across the steering coupler..I thought what the hey..what have it got to lose. Installed the ground and so far so good on the gremlin being put to sleep. Thanks for the heads up as I might have never thought of checking there!
My 1977 F-250 Crew Cab has a different rag joint. Unfortunately, it does not have a bolt on each end of the coupling. Instead I used a hose clamp to attach the wire to the shaft. Although this is not the greatest look, its better than buying a new $280 steering shaft. Make sure to clean and polish the shaft for a good connection. I also used some dialectic grease to hopefully make the connection better and last longer. Now the truck is ready to pass the state inspection.
Steering shaft coupling grounding circuit for horn.
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