Does anyone have any ideas or experience about installing a line in on the 2004 factory stereo? I want to output my phone, Ipod shuffle, etc. into my stereo and I don't want to use a cassette adapter or standard FM modulator or antenna based FM modulator because the sound quality of these methods isn't as good as a line in. Thanks.

 

I used a cassette adapter for my Sirius radio and it worked beautifully.

 

Just buy an aftermarket radio that has aux input (3.5 mm jack) and install it yourself. You will need several adapters for proper installation, such as hardware adapter, antenna adapter, and wire harness. if you don't want to mess with it, let a car audio shop install it for you.