Click on image for the lowdown. 
====
| | | Forums66 Topics128,181 Posts1,057,152 Members48,464 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
| | THANKS!
For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Feb 2001 Posts: 4,095 'Bolter | | 'Bolter Joined: Feb 2001 Posts: 4,095 | does it make a difference??
Ron, The Computer Greek I love therefore I am.1954 3100 Chevy truckIn the Gallery 2017 Buick Encore See more pix1960 MGA Roadster Sold 7/18/2017
| | | | | Joined: Apr 2005 Posts: 7,441 Bolter | | Bolter Joined: Apr 2005 Posts: 7,441 | Louder and you don’t want to hold the button very long at each honk.
Martin
'62 Chevy C-10 Stepside Shortbed (Restomod in progress)
'47 Chevy 3100 5 Window (long term project)
‘65 Chevy Biscayne (Emily)
‘39 Dodge Business Coupe (Clarence)
“I fought the law and the law won" now I are a retired one!
Support those brave men/women who stand the "Thin Blue Line"! Hug a cop!
USAF 1965-1969 Weather Observation Tech (I got paid to look at the clouds)
| | | | | Joined: Aug 2001 Posts: 1,300 'Bolter | | 'Bolter Joined: Aug 2001 Posts: 1,300 | Agreed... a 6V horn on 12V is loud enough to scare the bejezzus out of a railroad conductor. | | | | | Joined: Jun 2011 Posts: 5,096 Crusing in the Passing Lane | | Crusing in the Passing Lane Joined: Jun 2011 Posts: 5,096 | Or some female(usually) fondling their device at a red light.
Ed
'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
'55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.
| | | | | Joined: Feb 2004 Posts: 29,875 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,875 | To take the load off the horn wiring going up the steering column, it's a good idea to install a relay to carry the current to the horn. If you want to install a 1 ohm 200 watt resistor inline with the relay, it will moderate the volume a little.
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!
| | | | | Joined: Feb 2001 Posts: 4,095 'Bolter | | 'Bolter Joined: Feb 2001 Posts: 4,095 | Thanks all, very helpful. Was to help on my Plymouth Owners Club.
Ron, The Computer Greek I love therefore I am.1954 3100 Chevy truckIn the Gallery 2017 Buick Encore See more pix1960 MGA Roadster Sold 7/18/2017
| | | | | Joined: May 2001 Posts: 1,907 'Bolter | | 'Bolter Joined: May 2001 Posts: 1,907 | I rewired my horns when I went to 12-volt 10 years ago. I put them in series instead of the original parallel. Of course, I had to insulate the first horn in the circuit using nylon bolts and several pieces of plastic milk bottle between the mounting plate and the firewall.
It seems the 2nd horn might get an oscillating current from the 1st but it seems to work.
1948 3/4-Ton 5-Window Flatbed Chevrolet 34 Years. Now with a '61 261, 848 head, Rochester Monojet carb, SM420 4-speed, 4.10 rear, dual reservoir MC, Bendix up front, 235/85R16 tires, 12-volt w/alternator, electric wipers and a modern radio in the glove box.
| | | | | Joined: Mar 2002 Posts: 9,115 'Bolter | | 'Bolter Joined: Mar 2002 Posts: 9,115 | The horns on my truck were barely adequate. I had tried to adjust them for best operation. When I changed over to 12 volts last season the horns sounded just right. Of course I changed the relay over to a 12 volt relay.
The horns on my 38 Master are deafening just running on 6 volts. I think I would put them in series for 12 volts. | | | | | Joined: Jan 2002 Posts: 2,844 'Bolter | | 'Bolter Joined: Jan 2002 Posts: 2,844 | I have two 6v horns being fed with 12v of juice. OMG!! I love it.
Craig My '50 Chevy 3100 5 window, '62-235cu, 3:55 rear My truck ....... Respect The Rust If I'm not working on my truck, '65 m00stang or VW camper, I'm fishing with the wife or smoking Salmon.
| | | | | Joined: Nov 2008 Posts: 544 Shop Shark | | Shop Shark Joined: Nov 2008 Posts: 544 | To take the load off the horn wiring going up the steering column, it's a good idea to install a relay to carry the current to the horn. If you want to install a 1 ohm 200 watt resistor inline with the relay, it will moderate the volume a little.
Jerry Great idea! Thanks! | | | | | Joined: Sep 2001 Posts: 29,270 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,270 | 6v horn relayA 6v horn relay was used with the standard horn from 53-55st. A 6v horn relay was used with the optional/accessory dual horns (47-55st). | | | | | Joined: Dec 2014 Posts: 357 'Bolter | | 'Bolter Joined: Dec 2014 Posts: 357 | And if you search for it you can find. 12 Volt horn relay
Julian Carter
1970 Triumph GT6
1967 Triumph TR4A
1952 Chevy 3600
1948 MG-TC
| | | | | Joined: Mar 2008 Posts: 1,775 'Bolter | | 'Bolter Joined: Mar 2008 Posts: 1,775 | Try this resistor https://www.speedwaymotors.com/Electric-12-Volt-to-6-Volt-Reducer-for-Motors,15824.html?sku=91064103&utm_medium=CSEGoogle&utm_source=CSE&utm_campaign=CSEGOOGLE&gclid=EAIaIQobChMI0YfZiaq12QIVkVp-Ch3YIQTgEAQYAiABEgIZS_D_BwE It's what is commonly used on 6-12v blower motors. A good place to mount it would be next to the horn for heat dissipation. Resistor
Last edited by Whitedog; 02/20/2018 8:36 PM.
| | | | | Joined: Sep 2008 Posts: 93 Shop Shark | | Shop Shark Joined: Sep 2008 Posts: 93 | Just switched, after 14 years, to a 12 volt sys. in my 3/4 ton , 3600. I put a relay on the gas tank to drop to 6 volts, my question....what about my lights?? didn't try them because I'm a thinken they will pop! Do I need to change ALLthe lights to new 12 volters??[ and is that a real word?] Thanks again, Paul ....PS all new 12 volt wiring, ans led stop lights....6 volt head lights were sooo dim//////Thanks again, to a great bunch of guys that help us'ens with 10 thumbs! | | | | | Joined: Sep 2001 Posts: 29,270 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,270 | | | |
|
|
