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2N Horn Installation

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ED-Illinois

04-13-2002 12:56:49




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After I posted a question about finding a source for a 6 volt horn last week, someone e-mailed me offering a VW Beetle horn he had from one he converted to 12 volts. Well, I got it today and installed it, but it isn't working. Maybe you guys can figure out what I did wrong.

I have a 6 volt pos. ground 1946 2N. I ran a wire from the center post on the terminal block to a push-button switch I got at NAPA. Then I ran a wire from the push-button switch to the horn, which is mounted with a single bolt from the bracket on the horn to the front of the tool box. I ran another wire from the horn connection on the toolbox to the horn and attached it to the other lead on the horn. However when I push the button, no beep. With the push button pushed, I get 6 volts in and out of the switch and at the horn terminals.

Any advice is apreciated.

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terry

04-14-2002 07:26:47




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 Re: 2N Horn Installation in reply to ED-Illinois, 04-13-2002 12:56:49  
This must be a real old bettle, my brother had a 70 when he was in college and it was 12 volts. what year is this thing?



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Mark Hendershot

04-13-2002 16:03:22




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 Re: 2N Horn Installation in reply to ED-Illinois, 04-13-2002 12:56:49  
ED; These horns are sometimes stuck inside. Bang in on something a couple of times and clean the conections real good. As long as you have both sides of the battry at the horn hooked up it should be Honking. Did you test it first befor you put it in? Their is a little adjusting screw on them that you can turn to make it sound better and sometimes you need to turn it just to make it work again. Mark H.

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Bob in NY

04-13-2002 15:48:39




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 Re: 2N Horn Installation in reply to ED-Illinois, 04-13-2002 12:56:49  

Jack's got the right idea. This positive ground stuff is whacko. Convert!! Lectronics is magic anyway, lets's not make it more confusing with this postive ground. Bob in NY



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No No NO

04-13-2002 19:11:43




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 Re: Re: 2N Horn Installation in reply to Bob in NY, 04-13-2002 15:48:39  
Until I get around to adding the cruise control,
Air conditioning and and compact disc I'll never convert my ez starting 6V Positive ground 2N.



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Jack- Illinois-hold on!

04-13-2002 13:56:25




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 Re: 2N Horn Installation in reply to ED-Illinois, 04-13-2002 12:56:49  
Don't mess with the horn yet. You had 6 volts at the horn connections. That is the clue. The connection that you ran to ground(frame) has to remain at ground (0 volts) at all times. The other goes to -6 volts when you press the horn button. This is with the black wire of your meter on ground or tractor frame and if you have your battery positive post grounded. Until you get these conditions your horn will never beep!

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Dave Smith

04-13-2002 13:40:22




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 Re: 2N Horn Installation in reply to ED-Illinois, 04-13-2002 12:56:49  
Ed, Inside the horn is a set of points (not unlike ignition points) and a small wound electro magnet. Im not familiar with VW but most horns are riveted together. You can drill out the rivets and replace with bolts. Check the electro magnet with a VOM for continuity. If it is open scrap the horn. Check the points for being burnt or corrosion. Clean and polish them so they shine like chrome. Don't leave any rough spots and keep them paralell. Also check the end of the iron core of the electro magnet for dirt or rust between the diaphram. Most older horns also had a screw to adjust. That would change the tone.
A puttery job but it can be done. You would not want to pay someone to do it. 12 volt will burn it out if it is 6 volt. Polarity don't matter. Unless the Germans did something diffrent.
Dave <*)))><

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buck

04-13-2002 13:35:26




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 Re: 2N Horn Installation in reply to ED-Illinois, 04-13-2002 12:56:49  

assuming that the VW horn is an original equipment horn this is what I would do. to the two connections on the horn first make sure that they are very clean and bright.Connect a short lead to each connection and connect it to a 12V power source. Yes 12V and see if it works and keep it attached to ring its chimes so to say. Now near the two electrical connections there is a raised area about 1/2" in diameter by about1/2" tall with some putty looking stuff covering it or this putty may have been have already been removed.Inside this raised portion is a screw for adjustment. Now with the horn connected directly to your 6V battery adjust the horn for best operation (this may not be the best sound) I have found that once these particular horns lay dormant for awhile they just don't come back to life.

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duey in MN

04-13-2002 13:20:18




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 Re: 2N Horn Installation in reply to ED-Illinois, 04-13-2002 12:56:49  
Sounds like a poor ground. If there's voltage to the horn and a good ground, it's gotta work if it's a good unit.(I'm not sure why a horn would care what the polarity is anyway....a starter sure doesn't.)



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ED-IL

04-13-2002 12:58:32




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 Re: 2N Horn Installation in reply to ED-Illinois, 04-13-2002 12:56:49  
I was a little unclear - the beetle was converted to 12 volts, not the horn.

Ed



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