Here are ten things that will help you if your CD changer will not play or if they skip.
1) Before installing your CD changer ensure you have removed the transportation screws, (where fitted). These will be highly visible on the exterior of the CD Changer.
2) Ensure the angle mounting adjustment screws found at either side of the CD changer have been set correctly according to the angle at which the CD changer has been mounted. Consult your handbook for details.