I have an older model panasonic head unit. It has a cd changer input, with a pair of rca's and some other weird looking plug. I want to be able to plug my ipod into it, but don't know how. just plugging it into the rca doesn't work. I know i probably need a weird plug, but have been searching online and cant seem to find one. I think maybe the deck is too old.

Panasonic CQ-DFX301U