[Mikael335i]

Hello,

I hope I am in the right section to post this...

I would like te replace the horn of my 335i F30 for another one which can provide more Db.
I was looking on Internet and I found one from Hella compagny (this is the part number 3BA 002 768-082).
The datasheet of this horn are here:
http://www.hella.com/MicroSite/soe/s..._KI_B36_EN.pdf

I have 2 questions:
-Do you know if I need a relay to use this Hella horn ?
-On my car, I checked, I have 2 horns (1 of each side in front closed to the wheel) but I don't know if there one relay in the circuit...Do you have this information ?
-Do you have a electronic schematic that I can follow for this Hella horn with relay ?

Any information are welcome.
Thank you for your help.

Mikael

[olenikolai]

Installed Hella Supertones on my impreza, quite easy and all necessary parts was included. Not sure if it's more complicated on a BMW, but it shouldn't be a hard job

[RedRaiderDavid]

OK, those horns are 116db. I replaced the weak horns on my truck with Wolo Maxi Sound which are 115db. http://wolo-mfg.com/horns/electric-r...axi-sound.html
At the time these were the loudest electric horns I could find but I am almost positive the horns on our BMW are louder; for an electric horn they are pretty loud. If you do proceed you will need a high tone and a low tone.
If your looking for more volume you really need air horns.

[Dog Face Pony Soldier]

Originally Posted by RedRaiderDavid

OK, those horns are 116db. I replaced the weak horns on my truck with Wolo Maxi Sound which are 115db. http://wolo-mfg.com/horns/electric-r...axi-sound.html
At the time these were the loudest electric horns I could find but I am almost positive the horns on our BMW are louder; for an electric horn they are pretty loud. If you do proceed you will need a high tone and a low tone.
If your looking for more volume you really need air horns.

Run both. If that isn't enough; add another pair.

[Mikael335i]

Originally Posted by olenikolai

Installed Hella Supertones on my impreza, quite easy and all necessary parts was included. Not sure if it's more complicated on a BMW, but it shouldn't be a hard job

I have a look on the Hella Supertones on Youtube and I think the song is very shrill for me. Maybe it's due to the TV speakers...difficult to judge in fact.
I found on Internet the Hella Sharp tone model which which has deeper song...and I'm looking for horn which has deeper song.
On Hella website, it's written that both models are design for Off-road car.

Do you know why the main installation of Hella Supertones are made on Impreza cars ?

Thank you!

[Mikael335i]

Originally Posted by RedRaiderDavid

OK, those horns are 116db. I replaced the weak horns on my truck with Wolo Maxi Sound which are 115db. http://wolo-mfg.com/horns/electric-r...axi-sound.html
At the time these were the loudest electric horns I could find but I am almost positive the horns on our BMW are louder; for an electric horn they are pretty loud. If you do proceed you will need a high tone and a low tone.
If your looking for more volume you really need air horns.

Thank you for your answer and your advice. I will check on Internet for the air horn.

[RedRaiderDavid]

If you like the idea of air horns check these out.
https://www.hornblasters.com/video.php?video=80