iPhone distorts, iPod doesn't
I've had a iPod connector attached to my stock 156 stereo (Blaunpunkt I presume) and all worked great. Then I replaced my iPod with an iPhone, and after getting a voltage converter, it all still worked EXCEPT that the iPhone output is distorting sometimes because it is much louder than the iPod volume was.
I didn't install the connector so I don't know if there was any kind of master volume control, but how can I reduce the volume going into the Blaupunkt ?? The volume controls on the iPhone have no effect when it's plugged into the Blaupunkt (infact they don't even work when connected).