• Required reading for all forum users!!!

    Welcome!
    Register to access the full functionality of the GSResources forum. Until you register and activate your account you will not have full forum access, nor will you be able to post or reply to messages.

    A note to new registrants...
    All new forum registrations must be activated via email before you have full access to the forum.

    A Special Note about Email accounts!
    DO NOT SIGN UP USING hotmail, outlook, gmx, sbcglobal, att, bellsouth or email.com. They delete our forum signup emails.

    A note to old forum members...
    I receive numerous requests from people who can no longer log in because their accounts were deleted. As mentioned in the forum FAQ, user accounts are deleted if you haven't logged in for the past 6 months. If you can't log in, then create a new forum account. If you don't get an error message, then check your email account for an activation message. If you get a message stating that the email address is already in use, then your account still exists so follow the instructions in the forum FAQ for resetting your password.

    Have you forgotten your password or have a new email address? Then read the forum FAQ for details on how to reset it.

    Any email requests for "can't log in anymore" problems or "lost my password" problems will be deleted. Read the forum FAQ and follow the instructions there - that's what we have one for...

  • Returning Visitors

    If you are a returning visitor who never received your confirmation email, then odds are your email provider is blockinig emails from our server. The only thing that can be done to get around this is you will have to try creating another forum account using an email address from another domain.

    If you are a returning visitor to the forum and can't log in using your old forum name and password but used to be able to then chances are your account is deleted. Purges of the databases are done regularly. You will have to create a new forum account and you should be all set.

Help. 750 keeps braking horns

  • Thread starter Thread starter joe79
  • Start date Start date
J

joe79

Guest
Hi,

My 750 has got through 2 horns in 12 months. They just stop working. Its not the wiring I checked. Just burns them out. Any ideas?

Joe
 
What voltage is your electrical system operating at? Too high and it can fry stuff like lights, horns, or....

Wait, you actually have a horn? What for?
 
tkent02 said:
What voltage is your electrical system operating at? Too high and it can fry stuff like lights, horns, or....

Wait, you actually have a horn? What for?
Click to expand...

To validate my insurance, pass an MoT, pay my vehicle tax and ride on the road. You don't have a horn? What do you do with your horn button?

1978 GS750EC Therefore 12v system. How can it be producing to high a voltage to fry the horn, and only the horn?
 
what kind of horn? Is the horn burned? Are you using a relay? Do use your horn alot?
 
Joe79 said:
To validate my insurance, pass an MoT, pay my vehicle tax and ride on the road. You don't have a horn? What do you do with your horn button?

1978 GS750EC Therefore 12v system. How can it be producing to high a voltage to fry the horn, and only the horn?
Click to expand...

if the 12Volt system is running at 16 or 18 volts it can fry anything, but usually lights and batteries fry first. Horn button? I don't know. Make it into a Spud Gun trigger?
 
Honestly I've never seen a horn fail except from sitting for decades. But there is a first time for everything. Again, what Voltage is your electrical system operating at?
 
tkent02 said:
Again, what Voltage is your electrical system operating at?
Click to expand...

Yes, the system is a nominal "12-volt" system, but it needs to charge the battery (which is also over 12 volts), so the voltage on a well-running bike is in the 14.0-14.5 volt range.

Are you sure the horn is "burned out"? You can only burn it out if you (over)use it. If you have never pushed the button (except for your MoT test), there is absolutely no way to burn out the horn.

Yes, it may have stopped working, but it's not burnt out.

Look on the back side of the horn, you will see a small set screw with a lock nut. Loosen the lock nut, turn the screw slowly, see if your horn operation returns. Turn the screw for loudest operation, then turn it in almost 1/8 turn and lock it in place with the lock nut.

.
 
Steve said:
Yes, the system is a nominal "12-volt" system, but it needs to charge the battery (which is also over 12 volts), so the voltage on a well-running bike is in the 14.0-14.5 volt range.

Are you sure the horn is "burned out"? You can only burn it out if you (over)use it. If you have never pushed the button (except for your MoT test), there is absolutely no way to burn out the horn.

Yes, it may have stopped working, but it's not burnt out.

Look on the back side of the horn, you will see a small set screw with a lock nut. Loosen the lock nut, turn the screw slowly, see if your horn operation returns. Turn the screw for loudest operation, then turn it in almost 1/8 turn and lock it in place with the lock nut.
Click to expand...
Steve.. Thanks. I'll check when I get home but I don't remember any screw and lock nut.

This is the second horn that just stopped working after the bike had been standing for about a month.*Everything else powers up, lights etc. Bike runs, battery was reading 12.6v across the terminals.*How do I measure the operating voltage? Is that the output from the alternator?*

Sorry to pester but electrics are not my thing and this site was recommended in a classic mechanics magazine I read.
 
Last edited:
(Zombie Thread Apology.)

Thanks for that tip on horn adjustment. It would have never crossed my mind.
The '82 GS650G went from sounding like a road runner or maybe strangled duck to a reasonable attention getter.

Cheers, Alan
 
You must log in or register to reply here.
Back
Top