I am trying to install Pioneer N1 on my '05 mcs

Unfortunatelly, I dont know how to even start.

Can anyone help me out?

 

Post some pictures of what it is/where you want it to go, how you want it to operate/etc! Will it replace the stereo?

all this is helpful info..

 

If you have a pre-2007, it's not a big deal, fitwise. I had the same unit put in my 04. I didn't do it, but I observed. It took the installer about an hour. If you don't know what you are doing, I would have someone do it. I talked to a guy from cragislist who would do it for $100. Well worth it, because you have to splice a number of wires.