The TuneFlex has a built-in line-out jack for a cable to your in-car stereo, and a pass-through dock connector that lets you connect accessories to the iPod, like Griffin's iTrip FM transmitter or ...

The hardest part of [Mike’s] little hack is the soldering. The pins on those iPod connectors are just evil to solder. You’ll need the patience of a saint. I’ve worked with these same ...

The device can power a dead 3G iPod, but it can’t charge it, so Ian is looking for some input from the community. Some have already suggested using FETs with a lower turn on voltage.