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10-31-2021, 02:21 PM | #1 |
Junior Member
Join Date: Oct 2021
Posts: 13
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1940 ford trumpet horns need help
Hey guys, I been trying to get my horns on my 40 deluxe to work but can't seem to do it. Everything about these types of cars is all new to me. When I push the horn button I can hear the relay click. I've tried running a wire from the negative battery post directly to the horn but nothing happens. The horns look to have been restored at one time. Took one horn out to look at the wiring inside, nice and clean. Took the points apart to clean they go back together very tight just like when I took them apart. What am I missing on this? Need good experienced help please! Thanks in advance! Steve
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10-31-2021, 03:07 PM | #2 |
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Join Date: May 2010
Location: Coral Springs FL
Posts: 10,919
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Re: 1940 ford trumpet horns need help
By pass the horn button and relay and first see if the horns work when attached directly to the battery.
Last edited by 19Fordy; 10-31-2021 at 03:15 PM. |
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10-31-2021, 03:30 PM | #3 |
Junior Member
Join Date: Oct 2021
Posts: 13
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Re: 1940 ford trumpet horns need help
19Fordy, I've tried that with a wire to the negative side of the battery and have nothing. Still looking for answers. Thanks for your suggestion though.
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10-31-2021, 03:35 PM | #4 |
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Join Date: Jul 2016
Location: Lake worth Florida
Posts: 1,086
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Re: 1940 ford trumpet horns need help
You are still 6 v pos ground? Is the horn isolated and not making a complete circuit. Have you tried a cable from the horn body to the pos and a neg wire to the horn where the relay wire use to go . It takes alot of amps and will get hot fas , use for just quick tests . No fuel around incase it sparks .
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10-31-2021, 04:22 PM | #5 |
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Join Date: Oct 2021
Posts: 13
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Re: 1940 ford trumpet horns need help
Ggmac, I tried again, this time ran wires from the pos and neg battery terminal's. They both work! So is something in my horn relay not completing the circuit? Do I need to replace the horn relay with a new one? Thanks guys!
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10-31-2021, 05:01 PM | #6 |
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Join Date: Oct 2021
Posts: 13
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Re: 1940 ford trumpet horns need help
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10-31-2021, 05:12 PM | #7 |
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Join Date: May 2010
Location: Coral Springs FL
Posts: 10,919
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Re: 1940 ford trumpet horns need help
Check the horn wire that runs down through the steering column. It may need replacing.
https://www.dennis-carpenter.com/car...4308-horn-wire I think DRAKE also sells it. There's also some on EBAY. |
10-31-2021, 06:05 PM | #8 |
Senior Member
Join Date: Jul 2016
Location: Lake worth Florida
Posts: 1,086
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Re: 1940 ford trumpet horns need help
Do you have a really nice painted trumpet ? I would bet its got paint where it’s disturbing the circuit.
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10-31-2021, 06:13 PM | #9 |
Junior Member
Join Date: Oct 2021
Posts: 13
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Re: 1940 ford trumpet horns need help
I think that is what is causing my problem is nice black paint somewhere that is interfering with the ground. That's one of the things I'll be looking for tomorrow. Thanks again to all who replied to my call for help on this problem. I appreciate you all!
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10-31-2021, 08:27 PM | #10 |
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Join Date: Oct 2011
Location: Shelton, WA
Posts: 3,799
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Re: 1940 ford trumpet horns need help
I have restored the horns for both of my 40s. One thing I found was that the adjustment is hyper sensitive. There is very little movement between not working at all and making a horrible noise. Somewhere between the two is a nice clear tone. Clean the contact points and then using small jumper wires to a 6v battery, adjust it to a sound of your liking. You will be surprised at how little you need to move the adjustment.
Of course, you have to take the cover off to see this. Last edited by deuce_roadster; 10-31-2021 at 08:36 PM. |
10-31-2021, 09:00 PM | #11 |
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Join Date: Oct 2021
Posts: 13
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Re: 1940 ford trumpet horns need help
I'll give it a try to get better tone. Thanks!
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