C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
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Old Aug 9, 2017 | 12:59 PM
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Default What dis?

This is my alarm horn, what is that small **** for on the back?

Ok, I have surmised that it is an adjustment ****, but what does it adjust? Tone, loudness? Thanks. I could not get the old one off the car due to rust so several years ago while a friend swapped out my mufflers, I had him tack this rebuilt one on and the other day after a drive, I noticed it hanging by it's wire. So I am going to try again to get the old rusted screw out and put this back in the correct way.
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Last edited by kansas123; Aug 9, 2017 at 03:09 PM. Reason: add information
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Old Aug 10, 2017 | 12:08 AM
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It is used to aid in setting the tone to some degree.

It is very touchy and once you get it to work...it does not take a lot of movement in that screw to change the horn sound.

DUB
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Old Aug 13, 2017 | 05:45 PM
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As per shop manual screw adjusts the current draw. On the C2 cars, manual shows 7-11 amp draw at 12 volts for the pair of horns on the car. Ron B.
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