I can have all the electronics off but the Rio and it doesnt change a thing.....

keep in mind...if i disconnect the Rio and just run the Sony there is absolutely no noise at all......i tried to isolate where it was coming from on the rio---perhaps the sled---so i disconnected the rear leads from the sled and hooked it directly to the Rio...no difference

i bypassed the harness from the rio to the wiring harness of the car (only for the ground wire)...no difference