clarkoh Posted June 12, 2014 Report Posted June 12, 2014 I have 2 horns from Pilothouses, one is 1948, the other is 1951. Similar but different. Both are 6Volt. Will they work on 12 volts?? Can I put a resistor inline to drop the voltage? Also, there are 2 little set screws with locking nuts, can they be used to "tune" the horns?? Thanks Customers truck is ready to ship. Someone else is doing the body work. I got it running and road worthy. Has a 360 from a 1974 truck w/ grannie gear 4 speed, now. Quote
TodFitch Posted June 12, 2014 Report Posted June 12, 2014 "Oogah Horn"? I was unaware that a 48 or 51 Dodge truck was a Model A Ford. I suppose that a really high wattage wire wound resistor of appropriate value could be used to keep from having a 6v horn fry itself on a 12v system but it would be much better to find a 12v horn. The little set screws with locking nuts are used to tune the horn but the range is really, really narrow. The instructions call for turning the set screw only a very small amount, maybe 1/8 or 1/16 of a turn, re-locking it and then trying again. The range between not working, working sort of, working well, working sort of and not working is really, really small. 1 Quote
OldDad67 Posted June 12, 2014 Report Posted June 12, 2014 I have 2 horns from Pilothouses, one is 1948, the other is 1951. Similar but different. Both are 6Volt. Will they work on 12 volts?? Can I put a resistor inline to drop the voltage? Also, there are 2 little set screws with locking nuts, can they be used to "tune" the horns?? Thanks Customers truck is ready to ship. Someone else is doing the body work. I got it running and road worthy. Has a 360 from a 1974 truck w/ grannie gear 4 speed, now.DSCN2734.JPGDSCN2737.JPG I need an OOGAH for my recent Model A purchase. Quote
Phil Martin Posted June 12, 2014 Report Posted June 12, 2014 6 volt horns will last a long time on 12 volts unless you blow them for a long time. They are a lot louder on 12 volts. 1 Quote
clarkoh Posted June 13, 2014 Author Report Posted June 13, 2014 I tried it on 12v. Blows a 20 amp fuse in about 10-15 seconds. Sounds like crap. Kind of high pitched screechy buzzing sound. lol I will get a wire wound resistor around 1 ohm and try it. The coils on either horn read about .7- 1.3 ohms. Thanks for the advise. When I get my truck together, some nice train horns should get the slow riders out of the way! Quote
Don Coatney Posted June 13, 2014 Report Posted June 13, 2014 I don't ever recall tooting the horn in any vehicle 10-15 seconds. One or two seconds is about my limit. Even a train whistle lasts only a few seconds. I am not surprised that a 15 second blast blows the horn and the fuse. Quote
Plymouthy Adams Posted June 13, 2014 Report Posted June 13, 2014 most manuals call for you to tune horns with amp meter in line for crisp sound at most amp draw..it you adjusted too tightly...current will go up but tone deteriorates.. Quote
pflaming Posted June 13, 2014 Report Posted June 13, 2014 (edited) Forget about the horn, paint the bed black and clear coat the cab. You would get high complements from admirers. Once it's painted, it's just another pretty truck! Edited June 13, 2014 by pflaming Quote
Plymouthy Adams Posted June 13, 2014 Report Posted June 13, 2014 (edited) not painted..its just a rolling wreck who's owner is too lazy or cheap to fix....lol (rarely will a coin land on its edge PP) Edited June 13, 2014 by Plymouthy Adams Quote
Dan Hiebert Posted June 13, 2014 Report Posted June 13, 2014 I had a '52 Ford F-3 for a long time that was converted to 12v. Didn't do anything for the horns, and they had no problem working. As Phil notes, they were significantly louder on 12v. A wire shorted once and they blew for at least a minute before I could get outside and unhook them - no problems afterwards. Quote
windsor8 Posted June 16, 2014 Report Posted June 16, 2014 Running the original 6 volt horns on 12 volt system in my 48 d24. They are good and loud and get people's attention. Quote
Steve Bou Posted August 22, 2014 Report Posted August 22, 2014 In my brother´s 53, converted to 12V I used the two horns in series. They work OK for long time without troubles. In series means, that you isolate driver´s horn from earth, and connect it to the another one. Quote
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