i have a buzzing noise in the interior. not a brake squeal or power steering noise. its like a sick buzzing noise, sometimes its strong and consistent, other times its weak and randomly comes and goes, most of the time it starts when i turn the switch on. The switch has to be on for the noise to happen, turn signals and/or brakes being applied will stop the buzzing, as soon as you let off of the brake or the turn signal or flashers are turned back off, the noise starts right back up. anyone have any ideas or experience with this problem? thanks a lot!!