Ignition on crackling noise?

[windscreenman]

I was exactly the same only noticed the noise after ais removal being paranoid I heard the crackling and thought what the feck is that it didn't do that before  anyway not to worry if you want to check the operation of the servo lift the tank them torn the servo pulley by hand to open the valve then swith ignition on the servo should return to original point if it does servo and valve work my bike goes like a rocket now I've done the ivans too all set for sunny days now
Ride safe