Horn tests
 

Hello, this is my first post, so bear with me!
I recently purchased a 29 closed cab pickup. I have wanted a classic pickup for years and finally found one for sale. Bought it from my neighbors across the street from my home.(go figure).
I have been working on mostly electrical parts (Headlights, break light switch ect) And Im finding that the ground and contact points are fixing my problems. My horn does not work and whould like to know what tests I can run on the horn system to see if it is in working order before I take it apart.
(Which lead shoud be hot? If horn botton is working ect.) Thanks in advance for any suggestions.

Re: Horn tests
 

I'm pretty new at this as well, but look at your ammeter while you push the horn button. If the needle moves to discharge slightly when you push the button, then the button and the wires to the horn are likely ok. There is current draw, but the horn may not be turning. Pull the back cover off the horn and have a look. It gets pretty obvious when you take the cover off. It's only one screw.. Good luck!

Re: Horn tests
 

I would remove the horn cover and unplug one wire and ground the horn terminal. If you don't get the horn to blow, or at least a spark, then plug the wire back in and remove the other wire and ground that terminal, and try it again. If you have a volt meter it's easy to test which wire is hot. It doesn't matter which wire goes to which terminal. The ground terminal leads to the horn button, and quite often the horn button doesn't make a good ground due to years of corrosion from not being used. I push the button down and roll it around as it's pushed, and sometimes this will get the horn blowing again.

Re: Horn tests
 

Thanks guys, I got it working earlier, I cleaned the contact at the bottom of the horn rod. I cleaned the other contacts last week, but overlooked the bottom fo the horn rod.
All I have left is to lube of the truck, inspect brakes, and im on the road.
This is fun!!!!!

Re: Horn tests
 

Re: Horn tests
 

I'm pretty new to the hobby as well. Bill and the Dog are right, the fun starts when you drive it. Seems like most people are nervous about taking off in the A when they first get one. I know I was ! As you drive it you will see that you can trust them if you do the basic care and feeding. Get out and enjoy !!!! Oh, and don't follow Bill if you meet up with him on the road or off the road !

Re: Horn tests
 

Model A Wiring Diagram in case you don't have one.
http://www.webjunk.com/modela/wp-con...amcolor2sm.jpg

Re: Horn tests
 

I "test" my horn often... As I'm driving along I sometimes randomly blow it, wait a few minutes, then blow it again. Usually the passenger with me will not say anything the first time, but by the second or third time will ask what thats all about. I tell them I'm testing my horn, I have to keep checking it because who knows, it may have just quit and I wouldn't know it until I needed it. Yeah, I get strange looks... Kind of like leaving a clock stopped in the house and then when asked why I always look at the stopped clock to see what time it is, I say "Haven't you heard? A stopped clock is the most accurate, twice a day it is EXACTLY right". The nice thing about being thought "excentric" is you can get away with just about anything and no one gives it another thought.

Re: Horn tests
 

Have you got with the Sooner Model A Club yet? Good active group and very helpful. Pm me and I will give you more info.Phil

Re: Horn tests
 

Re: Horn tests
 

Bill, That last picture looks like Mexico today!!! (only the cars are usually newer but not in that good of shape!)

Re: Horn tests
 

Thanks for the drawing. I only see two wires coming off my gen. One goes into the harness. The other goes up to the fire wall?

Re: Horn tests
 

The one going to the harness is going into the light harness and supplies power to the horn and lights. The other one goes to the terminal box, through the ammeter, back to the other stud in the terminal box, then down to the starter switch and back to the battery.

If you ever think the ammeter is bad you can just bypass it by jumping the two wingnuts on the terminal box cover.