Fiamm horn wiring

[exit11]

I have a 77R100S that I want to put 2 fiamm horns on.I have 1 Steibel mounted on left side. Both horns work.How do I wire them in.
Thanks, Ray

[Isamemon]

I did the same recently on my 78. ran the original wiring to the "left horn" and a jumper to the right horn . on the right horn I ran the ground to the bolt mounting to the frame.
used the typical connectors and painted them black so they kindof look stock

[lkchris]

In '77 and '78, RS came with dual horns and /7 came with single horn.

RS had a horn relay,; /7 didn't.

Take this as a clue that the switch won't handle dual horns without a relay.

[Rod Sheridan]

I re-wired my bike (R90/6) to include a horn relay and 30 ampere fuse from the battery when I went to 2 horns.

Regards, Rod.

[exit11]

Horns are connected. I used a relay with 30 amp. fuse. A lot louder than the single stiebel horn.
Thanks, guys

[Isamemon]

wow
thanks for the tip
diconnected wires to the 2nd horn until I get a relay

[535is]

A lot louder than the single stiebel horn.
No kidding! I have to really think about letting loose with those things right there inside the same fairing as my ears!
But I love those Fiamms. I use the same things in my 535is. They are a lot nicer when they are a full 3.5 engine compartment ahead of you ... :thumb