Car Stereos: i need help wiring a cd player into a car, sony cdx, orange wire

Question
I have a sony cdx gt20w and i need to know how to straightwire it into a 2004 Cavalier...as far as i know on the cd player there is a red and yellow wire that should be put together and attached to the orange wire coming from the car but when i look at the ground wire there are 2 black wires coming from both the car and the cd player and i dont know what i should be doin with them.

Answer
Ryan,  Be sure the black wires are plain and have no stripes on them.  That should solve that problem.  If not, you will need to check the wires to see which one is the ground wire.  Then, just connect the ground wires, and you should be good to go.  Hope this helps, Scott