I just fixed one of my horns

[Hammond68]

I just took one horn apart and got it blowing again. Very simple operation. I used a dremel,ground off the rivets. Inside is a metal diaphragm. It was rusty, cleaned it up with emery cloth and little wire wheel on the dremel.
There's also a points looking contact in it. It seemed stuck. I pried it apart and cleaned the contacts with emery cloth. Pretty much cleaned it everywhere in there. It started raining before I could get the second horn off. I also sealed it with sealer as it had a paper gasket.
Very simple. In one parts catalog they go for 100 for the set. I can take a few pics of the next one if anyone's interested.
My horn problem was the horns themselves.

[KSCHEVYUP]

Hammond68-
Thanks for taking the time to share info on horns.
Pics are always a bonus!
Ron

[Hammond68]

Second horn resulted in failure. The metal diaphragm was pitted, it was worse than the first. I'll post a series of pics.

[Hammond68]

A few rivets ground off

[Hammond68]

Heavy rust/pitting.

[Hammond68]

Best it would clean up.

[Hammond68]

After separating the two sides

[Hammond68]

Didn't hit the upload button

[Hammond68]

Points looking contact.it's also adjustable from the outside with a reversed torx socket. Female instead of male tool needed ot channel locks.

[Hammond68]

No springs, nothing falls apart on opening. I do have a working horn now but just one of the two.

['68OrangeSunshine]

Is your one working horn a High or Low?
I had the same Dremel fun with a C horn from my '68 C/10. I got it sounding again, but I have a steering wheel horn/contact problem. Or a short in the black wire. Not obvious on the surface.

The single horns were pitched in the Key of C. Double horns ran a Low of G and a High of A.
Blown together, they put out a chord, that hits the human ear. [I think.] Not a pro musician, so I'm not sure what key the resultant note is...
You could post a WTB ad for the matching horn. High or Low.

[Hammond68]

I believe it was the high that didn't work.

[randy500]

Thanks for posting this, I read it last night and went right out to the garage, fixed 2 high note horns, contacts needed cleaning. The rivers are surprising difficult to remove!

[Hammond68]

Thanks randy. I've gotten so much out of this forum I'm glad to be able to give something back.

['68OrangeSunshine]

Junkyards may have the right stuff, if looking for a High note horn, if you still have them in your area.
I ran a Mercedes Benz horn, a very high C for a while. Made an annoying 'Beeeep'. Only trouble was when blasting it at ricegrinders in the usual commuter morning shoot-out, I just got 'Beeeped' back.
I have tried it with my DelcoRemy horn with a double wire horn harness, but a short in my horn button circuit has me stumped. When it does honk, the chord is pure jazz. Maybe putting on the original wheel will help.
As an alternative, I got a USA-made Fiamma brand "Freeway Blaster" dual horn set for not much money at Harbor Freight. Yes USA-made. I run it in my '71 Jimmy.

[Hammond68]

Harbor fright. I'm surprised. Do they sound good?

[Ol Blue K20]

I like late 70's/early 80's Cadillac horns myself. Loud and sexy.

['68OrangeSunshine]

Originally Posted by Hammond68

Harbor fright. I'm surprised. Do they sound good?

They do. I call them my "F___ Y__" horns. Had to lean on them today when some Jeep with New Jersey plates, pulled a 'Jersey Sweep' of 2 lanes left to turn left into a mall, cutting in front of me while on my way to work. What's a guy from Jersey doing here in the Summer anyway? Witness Protection?