The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1967 - 1972 Chevy/GMC Suburbans & Panels Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 04-13-2020, 10:51 PM   #1
srfinatsunset
Registered User
 
srfinatsunset's Avatar
 
Join Date: Jun 2017
Location: Oak View CA
Posts: 58
Horn has power no sound

I replaced the Turn Signal Switch in the the steering column. It’s a non-tilt column. Broken turn signal, original plastic. I plugged everything in and now there is no sound from the horn. I check the power at the horn. 12 Volts when I press the horn button. My horn work before I replaced the switch. Did I burn up the horn? Is the horn 6volt?
srfinatsunset is offline   Reply With Quote
Old 04-13-2020, 11:57 PM   #2
LockDoc
The Older Generation


 
LockDoc's Avatar
 
Join Date: Aug 2006
Location: Montezuma, Iowa
Posts: 25,849
Re: Horn has power no sound

Quote:
Originally Posted by srfinatsunset View Post
I replaced the Turn Signal Switch in the the steering column. It’s a non-tilt column. Broken turn signal, original plastic. I plugged everything in and now there is no sound from the horn. I check the power at the horn. 12 Volts when I press the horn button. My horn work before I replaced the switch. Did I burn up the horn? Is the horn 6volt?


The stock horn would be 12 volts. Did you try rapping on the horn with a wrench or something like that while someone holds the horn button down? If the green wire to the horn has power when the horn button is pressed down the horn should honk..... You might also remove the horn mounting bolt and clean the horn bracket and core support where it bolts on. It has to have a good ground there.

LockDoc
__________________
Leon

Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles

(My Dually Pickup Project Thread)

http://67-72chevytrucks.com/vboard/s...d.php?t=829820

-
LockDoc is offline   Reply With Quote
Old 04-14-2020, 08:47 PM   #3
HO455
Post Whore
 
HO455's Avatar
 
Join Date: Feb 2016
Location: Portland Oregon
Posts: 11,415
Re: Horn has power no sound

Where are you measuring the 12 volts? Using my rule of always look at the last place I worked. I would pull the plug off of the horn relay and use a continuity tester within lead on the black lead in the plug and the other lead to a known good ground. You should not have continuity until you push the horn button. Then you you should have close to zero resistance. If this is not what is happening then I suspect that the horn button is not making the connection to ground.
__________________
Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help.
RIP Bob Parks.
1967 Burban (the WMB),1988 S10 Blazer (the Stink10 II),1969 GTO (the Goat), 1970 Javelin, 1952 F2 Ford OHC six 4X4, 29 Model A, 72 Firebird (the DBP Bird). 85 Alfa Romeo
If it breaks I didn't want it in the first place
The WMB repair thread http://67-72chevytrucks.com/vboard/s...d.php?t=698377
HO455 is offline   Reply With Quote
Old 04-14-2020, 09:35 PM   #4
Killer Bee
Registered User
 
Killer Bee's Avatar
 
Join Date: Jan 2016
Location: Barber City, CA
Posts: 4,817
Re: Horn has power no sound

Quote:
Originally Posted by srfinatsunset View Post
I replaced the Turn Signal Switch in the the steering column. It’s a non-tilt column. Broken turn signal, original plastic. I plugged everything in and now there is no sound from the horn. I check the power at the horn. 12 Volts when I press the horn button. My horn work before I replaced the switch. Did I burn up the horn? Is the horn 6volt?
12vdc at the horn or horn lead? with lead connected to the horn or disconnected?

12vdc is a low for good battery, was it 12vdc exactly or 12.6, 12.8, ??

should check while connected, you can jump the relay with remote start switch if you don't have an assistant..

if voltage drops significantly, check battery, may have drained during other repairs..

bad horn chassis mounting grounds can create weak voltage to horns also..

if you check lead while disconnected may only get surface voltage, basically a false reading while not under load..

if battery voltage is good, 12.8vdc neighborhood, and voltage at the horn is within .5vdc max acceptable drop, likely b/o horn..

was horn working previously right until column repairs or has it been a while since used/tested?

may just be coincidence?

another recent thread, member notsolo and both of mine were b/o horns..

http://www.67-72chevytrucks.com/vboa...rn#post8697804

good luck!
__________________
I started out with nothing - and I still have most of it
Killer Bee is online now   Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 06:47 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2025, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com