Just upgraded my headunit and don't need this anymore.
I had it installed on a B5.5 with DDIN Monsoon. If you have this you don't even have to configure it.
Steering wheel controls can be used to change tracks and volume.
Here and Here
- 15 ft iPod Cable (I had it run to my center console)
- Wiring Harness to patch into CD changer port in the trunk (includes power)
- White control unit into which you plug both items above