We just had a new head unit installed last weekend and it seems to be picking up interferance from anything else electrical in car and engine . It never happened before with our old head unit. Took it back today and they ran an extra eath which helped a bit. Cant see it being much else if as i say we have not had probs before.

Anyone else had similar problems? Or offer any advice.

 

Thanks

Eventually sorted. Was definately the head unit. Thanks for help and advice all