Fiamm air horns

[Sfarris]

Has anyone mounted these in the 03? I realize that they aren't the brand most folks get, but i like them on my motorcycle, so...



I found the stock horn behind the headlight, and then opened the Fiamm package to find a relay, and instructions written for someone who knows what they are doing, not for me! I am still trying to figure out if my horn is positive or negative activated... .



Suggestions from the enlightened, please?

 

[DF5152]

how do u want the new horn to work? like the factory unit?



disconnect the factory horn wire and use a test light to determine whether it get hot when energized or goes to ground. put the test light in the horn terminal and the other end to ground and hit the horn if the light lights the horn will be used to energize the relay and u will ground the other side. if nothing happens then take the end of the light and put it to a possitive source and hit the horn it should light. then wire the relay to a hot and the ground terminal to the horn buttonthe other 2 terminals will go to the hot and the compressor motor.



hope this helps



Dan

 

[Sregorb]

This MIGHT help for a big-picture look.

https://www.turbodieselregister.com/forums/showthread.php?threadid=73505



The horns (if like my 02) are positive activated. You'll see two wires going to each horn and one's black (just grounded to frame) and the other is green (I think, don't have it in front of me). Green wire is your splice point to the control tab of the relay. Positive power to source connector of relay. FIAMM or other airhorn solenoid goes to activated output of relay and of course the ground tab of both relay and airhorn solenoid gets run to frame.



Need more? PM me and I can walk thru it as I just finished my install recently. Not an 03 but in principle it should be similar.



Brian