Jeep Grand Cherokee Radio Replace/Remove

After I Bought Jeep Used The Battery Started To Die, Changed Starter And Alt. And Replaced The Battery At This Time The Jeep Had A Factory...

I Pulled The Front Trim To Expose The Radio For Cleaning. I Placed My Hand Between The Odometer Bezel And The Side Of The Radio. The Radio...

No Sound From The Radio. How Do I Use Infinity Amp With Aftermarket Stereo? What Wires Do I Put Together For It To Work?

I Recently Replaced My Pcm Because It Was Having Stalling Problems And Very Erratic Rpm Behavior. That Fixed The Problem But Very Shortly...