pls advise in my sc300 radio
 

Hello everyone, newbie here on this forum, I have a 1995 red SC300 with stock Pioneer radio without cd changer. I recently bought a stock Pioneer radio with cd changer control and a stock cd changer from a 1992 SC300. DoI need another wiring for the radio? And where can I buy wiring for the cd changer? how much? thanks in advance.