horn troubles

having trouble with my horn, now now bike horn that is, no battery on the xr so its ac bought new horn but only getting the horn to vibrate not make noise, does it need earthing to frame? its mounted on rear of rad at moment, ....

if its vibrating then there's power going to it. Maybe try a different horn on it?

Any horn will do just to try it.

First take it off the rad it will aid cooling
Try to get a small battery ie [long thin battery drill type or simmilar] nothing bulky and fit behind headlight.
There was a electric horn on fleabay that would pass mot very light weight otherwise - Take a look at images of the Baja designs headlight for the xr six fiddy for some inspiration if your looking for somthing more elaborate!

I don't think you are getting enough power to it, is it any better with the bike at half throttle?

I think the horn needs a good few amps to make it vibrate faster ie sound, as it's only vibrating there isn't enough oomph to give a blast.

Try a multimeter on the power in, see what you get.

Prob the easiest way to go is a selfpowered horn, off a kids bike.

Doug, ignore the crap I posted earlier, just asked an elect in work & he said to get a better earth on it, either run a strap from the hore to the frame, or mount it on the frame.

Apparently you need to get them negative ions out through a good earth, lost interest after that, so the rest was just white noise.........................

On some horns there is an ajuster screw,once you know you have a good earth and 12v going to it,if its still the same ajust the screw in or out until it vibrates.

As above, usually one earth, one live connector, and an adjuster screw on the back, like Sheeps said, try the adjuster screw, could be too tight / loose....good luck... let us know.....

cheers men will try to earth it and see what happens....