Here's my wiring diagram for "phase 1" - this will entail power to the laptop/docking station and audio via the factory amp/speakers.
The Thinkpad T30's AC adapter has "16V" and "4.5 Amps" on it. The iGo DC adapter that I picked up from RadioShack says it supports the T30, but it's only rated for 70W. Can anyone confirm that this will be enough juice for the Thinkpad, or do I need a stronger DC adapter?