How to install a car cd player?

Bought a mp3 / cd player for a car of later model. How do i install it as it doesnt want to work.?

• I have a nissan skyline 1989 model. I think the original was just radio then old owner put a tape deck in. We trying to install this new player as mentioned but doesnt seem to want to work. Could anyone help by telling me what i need to do this. i went back where i bought the cd player and they say my car is old and it is hard to get the connections for this nissan skyline 1989. think this is crap as lots of young kids drive these with cd players installed. I brought the car fo my son and brought him the player for xmas now we cant get it installed. just to let u know the older player worked so we know there is power there. We also got the new cd player and tried it in another car and we got it working. So just problems with this nissan, getting it installed. there are just 2 speakers in the door at the moment and no other extra things for the sound system if this helps. thanks guys hope someone can help. got a teen bit dissapointed here.

• Answer:

  http://www.skylineowners.com/forum/index.php http://www.installdr.com/Harnesses/Nissan-Wiring.pdf Wiring Diagram for Nissan pre and after 94 Any probs try on the Skyline free worldwide forum at the top,the best place tp ask for any Skyline and RB problems. My old R32 was empty space with all the wire cut right in.I took mine to a Car radio fitter as didnt want to face all the wires,even they had trouble fitting the new cd player and took them hours.Best asking on the forum as i believe a few extra bits are needed.