Noise from servos

[Savannah_flyer]

I recently installed my skyview with autopilot for both roll and pitch control. I have an Icom ic210a installed and connected to the audio output of the skyview (aux in). When I engage the autopilot servos-any servo, pitch or roll-I have a high pitch tone in my headset. It goes off when I disengage the autopilot. It seems that the noise is coming from somewhere in the connections but I cannot figure from where up till now. Any possible ideas on that issue?