Car Stereo

I have an oldsmobile aurora it does not have the rear outputs on the head deck and i have a 15" sub with amp out of my old car that i really miss and wanna put in this one. is it possible to do this without changing the head deck out becausse that is out of the question i love my stering wheel controlls way to much to do that:)thank you for any help:)

A "line level converter" can be found at wal-mart. it converts the signal from the speakers to rca line level to connect to the amp. it is about $20 and will do the job.