Modern Vespa

Hi everyone! So, I bought a 2009 Vespa LX150 thats in relative great shape with the exception of a little carb cleaning, the only problem seems to be an electrical one. I notice that when I activate the front brake, "clicks" that are directly proportional to the engines RPM are produced by the horn at a somewhat muted level. I suspect a bad ground somewhere but have no clue where to start looking. Can anyone please give me a possible starting point? I searched the web but could not find a similar problem. The scooter is bone stock also and appears to have little wear and tear at 1600mi.

Thanks!

Leif

Are you *sure* it's the horn that's sounding, especially if it's only when the front brake is applied? I can't see how an electrical fault could possibly cause what you describe with a stock loom.

Maybe you're hearing this:

From MV's FAQ wiki

Too funny! Last week my son said he heard "an electrical short or something" coming from the front brakes of our Fly.

It must make a special noise for folks with supersonic hearing. danny*h is right, it's the pads moving over the holes in the disc. Nothing to worry about.

Hehehehe.....

OK, here goes!
The brake light has a dirty outer surround, causing a partially bad earth which draws too much current. The wire that goes from the front brake lever has a switch on it obviously, but the cable in the loom has rubbed slightly against a power/ignition lead inside the loom running down through the head stem causing a partial short. The slight "ticking" sound that is rpm replated is because you also have a break in the outer insulator on one of the windings on your generator rotor, making the "tick" sound as a minor spark inside the loom running down your head stem............