Stebel Magnum twin horns fitting HELP PLEASE?

[Nick G]

Bought a pair of Stebel Magnum horns to go on my '03 1150GSA. They come with a 4 connection relay and a tiny black on grey wiring diagram that is hopeless.
Can anyone give me a clue on fitting these in place of the standard horn that has green and brown wires?

 

[JPB]

If you go to this site

http://www.r1200gs.info/index.htm

there's a really helpful section about wiring and fitting relays, although when I fitted a Magnum to my 2004 GS I didn't need one. Mind you, once fitted it didn't take long to realize that I actually needed a Stebel Nautilus which is much louder than a Magnum!

Good luck!

 

[JPB]

Sorry, there's a lower-case L missing from the end of that web address!

 

[Beemerman59]

If you go to this site

http://www.r1200gs.info/index.htm

there's a really helpful section about wiring and fitting relays, although when I fitted a Magnum to my 2004 GS I didn't need one. Mind you, once fitted it didn't take long to realize that I actually needed a Stebel Nautilus which is much louder than a Magnum!

Good luck!

The twin Magnum's are rated as the same 139db as the Nautilus. I fitted a pair on my '08 12GSA as I could mount them easier. They hurt the ears!

Can't help with the wiring as I used a different relay but I remember the naff diagrams they provided were useless. I would guess the green wire is the trigger and the brown the earth.

 

[Boxerboy55]

A multimeter will let you determine which pair of relay terminals energise the relay - as they are constantly connected and should attach to the feed from existing horn supply + to earth.

2 flying leads + a battery would soon suss out what's what as you can hear the relay click.

The other pair of relay terminals for the main switch are open circuit till the relay is energised so they connect via a fuse to battery and to new horns. + a new earth from new horns of course.

Last relay I played with had them in opposite pairs but terminals could be any old way.