Why is this happening??

[Alien]

I pulled the Stebel air horn off my VStrom and installed it on my 2006 Uly. It is just a pos & neg plug to hook it up. All my connections are secure and there is no exposed wiring.

When I use the horn, it doesn't blow the fuse every time. But when I use it for two seconds or more, it blows the 10a horn/brakelight fuse. I ran out of 10a fuses and put in a 20a fuse. So my brake light would work to get me home. Well some ******* pulled out in front of me and I hit the horn and the bike died. It ended up blowing the key switch fuse. I replaced that w a spare and was back on my way. Lesson learned: use the proper amperage fuse!

But the problem persists: why does the 10a fuse keep blowing? I really want to be able to use my LOUD Stebel horn on the Buell...

 

[Sirius815]

Um...have you looked up the specs for the Stebel horn? Chances are that it requires a lot of juice - much more than the bike was originally intended to deliver. The fuses blowing is to protect the wiring!

 

[oisterska]

I have mine hooked in line with the stock horn. I just wired in behind the horn. I think one of the wires for a stebel might be a ground?

There's a million wiring diagrams for the stebel horn on google images.

 

[rah7777777]

25 amps is what that diagram shows the air horn to be rated it.

You'll need to run a separate power wire from the batter and install a relay with the factory horn circuit as your relay trigger.

That's actually what the above diagram is showing.

You can't just splice it in to the factory horn as it pulls too much amperage.

 

[rah7777777]

And make sure you use a wire size that can handle 25a. I'm thinking a 12g but since its such a short run a 14g would probably work okay.

 

[Alien]

Thanks for the help!

 

[Alien]

Can you guys be more specific about the relay? Can I get this at autozone or similar place, and what exactly should I be asking for?

 

[Loki]

http://www.autozone.com/autozone/ac...row-relay/_/N-25ev?itemIdentifier=196454_0_0_

http://www.autozone.com/autozone/ac...N-25ev?itemIdentifier=196356&_requestid=22300

 

[user_deleted]

25 amps is what that diagram shows the air horn to be rated it.

good Lord.

 

[rah7777777]

You need a standard relay.

---( relay power feed )
You need a power wire from your battery (positive) to the 30 terminal on the relay. This power wire needs to be fused at 30 amps right off of the battery and I'd run 12 gauge wire.

---( Horn power feed )
Use a 12 gauge wire and go from the 87 terminal on the relay to the positive power side of the air horn.

---( relay trigger with factory horn wire )
Use the positive side of your factory horn circuit and connect to the 86 terminal on the relay. This acts as a trigger to activate the relay and close the circuit on your 12 gauge wire to activate your air horn.

---( ground for relay )
Run a smaller wire (16 gauge) from terminal 85 on the relay to a good ground. OR you can just hook up the ground wire from your factory horn here, much like the positive horn wire from above.

That's all 4 relay terminals, now you just have to run a ground from the negative side of your air horn to a good ground. Use a 12 gauge wire for this. Unless its a much shorter run then the power and you can use a 14 gauge.

Turn on your key and test. You should be good to go.

One word of caution.... If the relay has two 87 terminals take an insulated female spade connecter and put it on the 87 terminal your not using so it doesn't ground out when hot.

Hope that helps
-Robert

 

[Alien]

Thanks Robert, that is helpful