Since the new horn will be under the bonnet, the best place to find a power feed is one of the spare connections by the fuse box near the battery, but you must add your own in-line fuse in the wiring as close to the fuse box as possible. Then route your new live wire to wherever you find the existing horn feed and mount your relay there. The existing feed then supplies the signal to your relay, and your new fused supply powers your new horns.

I am Hypnorms husband and I have not changed the horn on my Octavia. As it was an L+K it already has the "get outta ma way" horn installed as standard.

I have added the nautilis horn to a Merc Vito with a rather awful CAN Bus system and the way to do it is to fit a relay which is fired by the bus and then take a feed either directly from the battery or from the fusebox by the battery as Speedsport has posted.

You MUST fit a fuse as CLOSE to the battery/fuse box as possible so that if the wire is rubbed through or horn fails it blows before the wire heats to red hot and sets your car on fire.......

The fuse-box has a choice of ignition live and permanently live feeds which you will be able to find if you have a DVM or bulb and an assistant.

HTH.

Tom

Edited 9 January, 201115 yr by topcat2006

Thanks for info re. taking a live feed from the fusebox to the relay ...etc. I guess it will be obvious which feed/ fuseway is capable of providing the current required (18amps, as mentioned before). Haven't got the car yet so can't look in the flesh. And presumably the suggestion is to discard the existing horn and replace with the Nautilus (or whatever?)......I've seen it suggested that you keep both on the same circuit and just a brief polite toot will give you a 'beep' from the original horn and the airhorn will delay it's operation for a fraction of a second whilst it builds up pressure...this, I think, is more directed to air horns with trumpets supplied via plastic tubing rather than the Nautilus which has no tubing and probably works pretty insantaneously. Presumably the existing Yeti horn does not have a relay to operate it as it's current draw is too insignificant? Just wondering, if it did have a relay you might not need to provide the new feed. All my old cars were devoid of CANBUS and I just ran cables hither and thither for any add ons...it's only since I started getting new cars I've been wary of touching the electrics for fear of upsetting either the Can or the Bus... or both!

All this discussion means nothing when you can't find the original horn!

tom

All this discussion means nothing when you can't find the original horn!

tom

I've given up this afternoon too. It's there somewhere, but I daren't sound it again as my neighbours will be getting annoyed, one kept coming out of her house only to find that her taxi wasn't actually sitting outside waiting for her!!!!

I must say, when you are standing right next to the car with the bonnet lifted, it does sound bloody loud!

Maybe it just sounds feeble when you are inside the car thanks to the excellent noise insullation.

Edited 9 January, 201115 yr by speedsport

I have a Welsh Collie.. and even a mild sneeze is enough to give her a minor heart attack... failed sheep dog probably sums it up really!

My Hubby Tom (Topcat2006) has always been one to 'upgrade the horns' from the mouse sneeze to the 'Scottish driver get outta ma way!' in which half the village knows that Tom has hit the horn!

Well Tom. Really look forward to meeting you up here in the Scottish Highlands. Sooo glad you live away down there.

I have find the following info for you, hope it helps:

Horn parts

Horn removal

Mind that there is quite a lot work involved. If you need the schematics regarding the involved steps, I can try to find it also.

BR,

Boyan

I have find the following info for you, hope it helps:

Horn parts

Horn removal

Mind that there is quite a lot work involved. If you need the schematics regarding the involved steps, I can try to find it also.

BR,

Boyan

Many thanks!

Thanks.

I think the dealer can sort it out!

The horn on my Elegance literally scared the crap out of the cat. Pity she was asleep in the Chevy at the time!

Is it just my Yeti, or is it also impossible on other Yetis to give a polite "beep - beep" on the horn, rather than a longer "blast"?

I get the impression that there's a slight delay between pushing on the horn button/pad and the horn starting to sound and the sound continues briefly after you let go.

As a horn is intended as an audible warning of approach (and not a device for showing one's displeasure at other motorists driving standards), I find it disappointing that you can't give a gentle toot when needed to indicate your presence. Anyone else found this?

Is it just my Yeti, or is it also impossible on other Yetis to give a polite "beep - beep" on the horn, rather than a longer "blast"?

I get the impression that there's a slight delay between pushing on the horn button/pad and the horn starting to sound and the sound continues briefly after you let go.

As a horn is intended as an audible warning of approach (and not a device for showing one's displeasure at other motorists driving standards), I find it disappointing that you can't give a gentle toot when needed to indicate your presence. Anyone else found this?

I think you're right.

I have noticed the same.

My thinking was, the relay taking time it kick in and then release ?

Oh, I have the double horn