i can see that. I’m this case there was some wiring issues as well, but it was not a difficult fix at all.

 

Well THAT didn’t go as expected.

I installed the horn along with a horn relay. Since I’d adjusted it on the bench I was expecting this to be easy. I pushed the horn button and got a brief honk, then nothing. I connected my remote starter button to the horn relay so I could honk it while next to the horn, and all I get is a thump when the armature gets power. No amount of adjusting seems to make it honk again. I pulled it apart again, filed the points, checked for continuity and function, it all seems good.

I guess I’m gonna have to stick my head out the window and scream when I need a horn.

 

Are you mounting this to truck with a bracket with those U-shaped spring metal tabs?
Pic not that great, but shows them at top curve of horn. These hang inside to bracket (chevy often), sometimes they go to the outside to connect to bracket (Ford mostly)

 

Also...
Is everything exactly the same?
Amps, volts?
Even the positive and negative connected to the post and the ground in exact positive and negative as on the bench? This should not make a difference theoretically. But then old things don't always believe in theory, and strangely do not like to go in the opposite direction, even if designed that way. Just my experience.
Are you 100% sure the ground is fantastic, the best ground anyone ever saw?

 

yes I did...

 

probably not. Things are always changing, so even if I used the same battery, if I discharged it a bit it would be different. If these horns are really that sensitive, I can’t imagine them working reliably in the real world.


wait....what???

I think the best ground I ever saw was in Colorado, high up on the Rocky Mountains. But this ground measures 0 ohms, plus I tried connecting directly to the battery using the same jumpers I used on the bench.

 

These horns are not that sensitive. Obviously you did a good job on restoration. A shame the horn not being used due to that might be something easily fixed.

About my comment re: the horn hooked up switching plus and minus leads. You have a 6v horn that was positive ground. Now you are running 12v negative ground. I'll likely get flamed here, and I know for an armature it should not matter, but seen a few of old electric things where it did matter. OK everyone, tell me how this is totally impossible for a plus 6v to minus 12v ground change to mean anything. Hiding under truck now.

Tedious process of elimination. My sympathies if you are going to keep at it, Bob. Relay (new ones fail too now), wiring, connections. You are there next to the thing, plus restored it to new and works just fine. Just my thoughts on why does bench work real nice, installation does not. We all have stumbled on the crazy reason something wasn't functioning correctly. I would walk away for a day or two, but not totally give up just yet.

HAHAHA Ground. Too funny.

Thanks for answering my earlier questions.

 

Get out from under the truck...unless you’re fixing something. I’m still 6v + ground. I verified the voltage coming out of the relay but I’m questioning if it’s supplying the current required. When I get a chance I’ll test with jumpers to the battery.

I kinda need a horn and I don’t want it to sound like a toy with a motorcycle buzzer, so I’ll keep at it. Thx for the replies.