Eclipse 5442 CD Player "jack jeep cherokee 1995" Questions

...jeep grand cherokee ...i can listen to my radio and it plays fine but i put a cd in and the cd plays there is just no sound and the same thing goes for my aux jack there is no sound. i have taken my ...

...Jeep Grand Cherokee to the stock system, pretty easy install just matching colors for wires and everything works (Radio). but not one CD plays. it says reading and it acts as if it is playing the ...