I have an older aftermarket radio in my '57 Bird from Larrys Tbird Parts. It has a set of wires coming out of the back of it labeled for hooking up a CD player. Can this be adapted to hook up an IPod or similar modern music storage device? New radios have a jack installed. Mine has a cassette player but they are getting hard to find. Hate to have to replace a perfectly good radio if there is a cheaper option.