horn issues please help :)

Hello all,
I'm having issues with my horn. I tried beeping some blind woman on the roads. It started but after a second it just stopped.
The indicators and break lights still work so I don't think it's a fuse issue. I'm probably going to install a stebel horn at some point. Basically how do I know whether or not the switch is broken or the horn has just packed in.
thanks :Flash:

Have you got a multi meter to test the contacts? When button is pressed you should get a reading or swap the fuse over for known working one.

Defo upgrade it, it's great having a fook off loud horn!

mattyb1500 said:

Hello all,
I'm having issues with my horn. I tried beeping some blind woman on the roads. It started but after a second it just stopped.
The indicators and break lights still work so I don't think it's a fuse issue. I'm probably going to install a stebel horn at some point. Basically how do I know whether or not the switch is broken or the horn has just packed in.
thanks :Flash:

Click to expand...

A list of possibilities for the horn failing to sound as provided within the Service Manual:

- Improperly adjusted horn
- Damaged or Faulty Horn
- Faulty main switch
- Fault horn switch
- Faulty battery
- Blown, damaged or incorrect fuse
- Faulty wiring harness


Providing the signal fuse is ok, as you've said the indicators are working, I'd probably check the resistance of the horn unit itself next. The manual specifies a resistance of 1.01 to 1.11 Ohms at 20 Degrees C.

From the circuit diagram I can't tell whether the live or earth is switched, either way, its probably also worth checking that a 12V feed is being supplied to the horn unit, be it permanent or switched.


Hope this helps,

Yamahaboyz

Or you can run, from a 12 volt battery, a positive and negative line direct to the horn. It should sound if working correctly..

TownsendsFJR1300 said:

Or you can run, from a 12 volt battery, a positive and negative line direct to the horn. It should sound if working correctly..

Click to expand...

Just be careful of the polarity the black wire on the horn is negative (-)

Thanks all for your speedy response's. I do havea multimeter but I think it might be broken aswell >.< I plugged it into a 12v supply and got nothing, so I am hoping it is just a broken horn.

Motogiro said:

Just be careful of the polarity the black wire on the horn is negative (-)

Click to expand...

Just checked my old FZ horn and old FJR horn, neither are marked.. Both, when hooked to a battery, even when swapping lines, sounded the same...

The wiring diagram does show when looking at the horn, the left side terminal is +, the right side -

TownsendsFJR1300 said:

Just checked my old FZ horn and old FJR horn, neither are marked.. Both, when hooked to a battery, even when swapping lines, sounded the same...

The wiring diagram does show when looking at the horn, the left side terminal is +, the right side -

Click to expand...

Correct! I was cautioning that if you just buss voltage to a pin on the horn direct from the battery and the horn is plugged in, there may be a polarity issue because one pin will be held to ground.

The horn has 2 black wires...