AUX Input for Sonata

I have a 99 Sonata with the H930 stereo. I want to hook my iPod up to CD changer input, but I haven't been able to find any AUX converter. At first, I found the pin-out and figured I could make my own cable,
but apparently the stereo performs a hand-shake with the CD changer before switching the inputs on, so it's not quite so simple.
Has anyone found a way to connect anything to the CD changer input on this car or similar Hyundai model? Thanks!

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