Bought my 05 MCS from a used car dealer. They knew nothing about the car other than it ran on fossil fuel. Since ipods rule the music world, I purchased an auxiliary input and an ipod adapter. I decided on the input (I have an pod adapter for sale now) because I can install sirius down the road. I read the threads and began the install. I reached behind the head unit to plug the cable in where I found blockage in the supposedly available port. I then proceded to remove the head unit to find out what the problem was. My surprise, there was something plugged in there. Hmm. I read the tag on the cable and realized that the input had already been installed, but where. I opened the glove box while sitting on the passenger side (do you ever sit there?) There it was. Doh!!
Moral of the story: if you buy used, inspect before you install. You never know what you may find.
Sorry for the novel, just wanted to bring you there.

 

thats pretty funny.... mine was new... with NOTHING in it i put what i want when i want