On the horn

General discussion of the BMW R1200RT/R1250RT
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Doctor T
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On the horn

Post by Doctor T »

My 2007 has twin horns. One is the old standard metal type and the other is a Denali sound bomb type(BMW stamped).
My question is can i get rid of the metal one and fit another sound bomb type using the standard wiring? Ive read many GS owners fit twins(hi &low) from E39 Bmw series 5 cars without extra wiring. The posts ive read say that it does not trip the Cambus.
Trust me I am a retired Doctor and lecturer at Oxford University of Structural and Mechanical/Electrical engineering.
"Blessed are the cracked, for they shall let in the light". Groucho Marx
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Stu
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Re: On the horn

Post by Stu »

You could always fit them and if you are worried about canbus you could easily fit a relay
Loopers
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Re: On the horn

Post by Loopers »

My 23 plate RT comes standard with twin horns. I believe you should be ok to swap the metal one out without any major problems.
MarkW
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Re: On the horn

Post by MarkW »

I have twin horns similar to these https://www.amazon.co.uk/110db-Loud-Sna ... 6369&psc=1 on my 2012 twincam. Couldn't tell you if they were standard (I suspect not) but they work just fine with no extra relay - CANBUS doesn't seem to mind.
audibob2
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Re: On the horn

Post by audibob2 »

My 2015 rt had the crap standard horn which I swapped for the higher tone from a k100 .

This is louder , but I could not manage to fit both horns from the k100 which sounded like a fog horn.

How does the later models fit twin horns?

Bob
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Doctor T
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Re: On the horn

Post by Doctor T »

I have enough room and can use the metal buzzer horn bracket. With research, ive found out the fiamm snail type horn draws no more than 6A. Does anyone know how many amps the standard metal horn draws?
Trust me I am a retired Doctor and lecturer at Oxford University of Structural and Mechanical/Electrical engineering.
"Blessed are the cracked, for they shall let in the light". Groucho Marx
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Re: On the horn

Post by burridge01 »

audibob2 wrote: Sat Sep 16, 2023 12:15 pm My 2015 rt had the crap standard horn which I swapped for the higher tone from a k100 .

This is louder , but I could not manage to fit both horns from the k100 which sounded like a fog horn.

How does the later models fit twin horns?

Bob
The Denali has its own bracket and fits a treat,super loud :thumb:
audibob2
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Re: On the horn

Post by audibob2 »

There was not enough room to fit a second k100 horn, so a Denali bomb will eventually be an addition at some point, obviously the Bmw bean

counters have either never ridden a bike, or they found a job lot inside some Christmas crackers.

We pay enough for the bikes these days..
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Doctor T
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Re: On the horn

Post by Doctor T »

Tested my horns today. Denali type drew 5A and the metal horn drew 2.3A=7.3A. Will the extra 2.7A trip the canbus? At the moment i have no way to test it and don't fancy buying another horn that may just sit in a box for years.
Trust me I am a retired Doctor and lecturer at Oxford University of Structural and Mechanical/Electrical engineering.
"Blessed are the cracked, for they shall let in the light". Groucho Marx
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