Audio Systems: adding a cd player to my car, pioneer keh, pioneer premier

Question
hi,

I have a 99 Camry LE. I just removed the factory combo cd/tape player/radio as only the radio was working. I successfully installed a pioneer KEH-P1010 tape player/radio. Now I want to be able to add a cd player in place of the aftermarket plastic pocket which now sits under the tape player. My question is: i'll get an aftermarket cd player (perhaps another pioneer), how do i connect the wires    of the cd player to the wires from the car to which I've already connected the tape player's wires? do i connect the cd player's wires to the wire combinations that came into being after i connected the tape player's wires to the car's wires? i hope i could make it clear enough. thanks.

Answer
the best way to do this  is by adding one of this  it will play 6 disc and comes with the  cable that plugs in to the back of your radio
blue square plug

http://cgi.ebay.com/Pioneer-Premier-CDX-P686-6-Disc-CD-Changer_W0QQitemZ16018135...