Audio System AUX input

Hi Just got a SXT and it comes with the standard AM/FM/CD audio system.
The manual says there is a optional AUX input on the back of the deck. If you plug in a wire the unit will let you choose the AUX on the mode select.
Thing is I want to use this option for my MP3 player. But to get to the back of the unit there is many panels, etc to remove.
Could somebody direct me as to how to go about this?
Has anyone done this yet?

MooN

I have only seen the aux input on the front of some of the radios.It is not standard.I work at a dealer and I am not aware of anything on the back of the radio

I am a salesman for these things and the aux input as far as i know only is in the front of the deck usually in the bottem left hand side you will see a silver ring and hole there to plug in a mini jack. if you are lucky though you might have an mp3 player cd deck. Try it out, i didnt know that our 300 had an mp3 system till i was messing with one of my cd's in the car and it said mp3 on the display.