The stereo has several output options: you can use its own speakers, stream audio via Bluetooth to your vehicle’s system, or use the AUX port or FM transmitter to connect. Whether you prefer to hear ...

The line-out is the appropriate connector to use to connect to a car stereo aux in. It has to do with impedance. Use that and then the ipod volume control doesn't matter at all either.

I am particularly lucky that my car, being a late model with Bose stereo, is the easiest, most plug-and-play version of 996 to install this system in, and I still had some issues.