Hi, I have a 2006 Sonata and I'd like to install an AUX input.
I've looked at various websites and it seems the simplest method is using an FM modulator connected to the antenna at the back of the stereo.

However, looking a few other sites it seems it's possible with some soldering you can get this to work without using a modulator
Add an auxiliary (MP3/Ipod) input to your car's stock radio

Any one know if this is possible?

Also my car has Sirus radio installed using this kit:
Sirius Universal Vehicle Kit (SADV2C) : Satellite Radio Accessories - Future Shop

Curious if this would make the process a little easier?