You’ll need the patience of a saint. I’ve worked with these same connectors and I came up with an easier, if bulkier method of soldering those things in my iPod super dock How-To.

He ordered an iPod dock connector from SparkFun and found that it had just enough space inside for the electronic components he would be adding. He consulted some online references for pinout ...

A device that connects an iPod to an audio system via the iPod's dock connector. For use at home, the adapter is typically a docking cradle that the iPod is pushed onto (see Apple dock).

and a pass-through dock connector that lets you connect accessories to the iPod, like Griffin's iTrip FM transmitter or AirClick remote control.

A cradle with a vertical plug (Apple 8-pin Lightning or Apple 30-pin) onto which an iPhone, iPad or iPod touch is docked ... See Apple dock connector. THIS DEFINITION IS FOR PERSONAL USE ONLY.