I'm getting whine when using the radio but not using the AUX as the AUX is connected to a iPOD (SWMBO orders, tho I'm trying to get her music on with Wendy filters) or a mobile for hands free calls.

The alternator is very recently rebuilt. No whine at all when using the players. It's a PCATS tuner. Sled wiring is correct as per the FAQ.

Any ideas ?