Hi all, I mostly lurk around the forums as I have more to learn than to contribute, but I have a question I can't find a good answer to. I'm hoping someone can chime in (no pun intended) on this subject.

I'm putting the finishing touches on my 1970 911 ST recreation project, and I want to start adding some rally accessories.

What horns or combination of horns would have possibly been used on this era rally cars? Were the factory pair of Bosch snail horns sufficient, or did team upgrade to louder horns or combinations of different high / low tones?

I read that the 1967 Monte Carlo rally car also had a PASSENGER FOOT SWITCH so the navigator could sound the horn to clear spectators off the course. This sounds like a fun feature to add. Does anyone have photos or information about this setup, or know what type of switch would have been used for this function? I remember some early American cars had a headlight hi/low switch that was activated with the driver's left foot. I'm imagining a similar setup with a momentary switch in the passenger's floorboard.

Thanks!
Jason