What horn is right for a 1966 911?

[304065]

OK, I see what the BACK of the horn looks like. . .

But I wonder what the FRONT looks like? I know it's not the "snail shell" type as that is an SWB horn from 305100 (1967 Model Year "official" cutoff). . .but is it flat or does it have a grill? A, B or C

Thanks!

[preS]

A

Richard

[304065]

Thanks Richard! That was fast.

There sure are a lot of different frequencies.

901 635 102 00 . . . .911 coupe -68, low pitch 390Hz, only with
901 635 112 00 high pitch 520Hz
this pair only through chassis 301224

901 635 102 01 . . . .low pitch 290Hz, only with
901 635 112 01 high pitch 345HZ
this pair from 301224 through 305100 (start of '67MY)

then there is the 912 set. . .

902 635 112 00. . . .low pitch 335Hz and
902 635 112 00 . . . .high pitch 400hz
these only through 354000 (Porsche) or 458100 (Karmann)

According to the Mercedes guys,

The official Bosch data, for what its worth, indicates we had two tones, middle and high, indicated by a 3/4 or 9/10 suffix designation on the horn tag. The 3/4 were on early cars, the 9/10 were on later cars.

3 or 9: 290 Hz Tone
4 or 10: 345 Hz. Tone

Guess I better bring a tuning fork to the Junkyard! Here is a link to what they sound like (volume DOWN) http://www.wolo-mfg.com/306-2t-stereo.wav

Turns out Bosch has reproduced these for certain cars. . . .http://www.automotive-tradition.de/e...file_Horns.pdf

Below are the Bosch numbers.

[preS]

C is 912

B is late 60s? 912??

Richard

[Semjon]

Also have model A on mine (302831)

[Cliff]

on 304863 67 911

[mshaver51]

... the correct horn is the snail shell shape?

the group discussion was fabulous, but i just want to make sure that i haven't gotten confused.

thank you, friends!

mike shaver

[VintageExcellen]

B is 914/VW