How to hook up a factory 6 disco CD changer to an aftermarket CD player in a ford explorer?

Your best bet would be to find the CD changer the same as the brand of your radio. Such as Kenwood radio, get a kenwood CD changer. The factory CD changer will not work with most newer radios installed. And unless you like running wires to the back of your SUV it would save you lots of time to get another CD changer. That is what I did and it works just fine.