Audio Systems: No power going to my Kenwood CD MP3 Player, metra wire harness, fuse block

Question
Whats going people. I recently purchased a Kenwood MP225 CD/MP3/WMA Player for my 96 Mercury Sable. I also purchased the Metra wire harness and CD installation kit as well. It took me awhile but I got everything installed and everything seemed to work fine. I actually thought that I would need to replace my factory speakers but my new stereo made everything sound 10 times better. That all came to an end about 2 Saturdays ago. I'm driving in my car listening to my new radio, I turn the sound up the sound just a little bit more to enjoy the base of the system. The next thing I notice, the power goes out. I check my wires to see if they were touching, which they weren't. Then I check my CD player. Everything seemed fine. I figured it was the fuse to the CD player. So then I went to hope depot to buy some fuses. I replaced the fuse and nothing happened. I replaced the audio fuse from the fusebox in my car and still no power. I even reinstalled the factory radio and still no power. I removed the wireharness to check to see if there were any split wires and nothing. A friend of mine told me that my power was grounded out. If thats the case, how do I go about fixing this problem. Riding about in complete silence is not fun at all.

Answer
Chuka,

 ok i will start out with some basics first .. make sure all your connections on your harness adapter are wraped seperatly in black tape so nothing can touch ect.. make sure the unit is secure in the dash so nothing can bounce and hit any metal to ground the entire unit out .. ok now here is where i think your problem will be is your fuse block ..go to your fuse block and pull every fuse out one at a time not just your radio fuses but every fuse in the block and replace as needed .. now i'm pretty sure this is where the problem will be but if its not you might have to run a new power , ground or even the 12volt ignition/turn on/rms wire to your unit ... hope this helps you out if you need anything else let me know

thanks