Project died. Took a trip to Florida and after about 4 hours the screen flickered and died. Took the center console out and looks like the wire to the DC adapter to the Lilliput touchscreen melted onto each other and shorted out the screen, the DC adapter for the laptop and the lighted climate control. Looks like it'll be a bit longer until I can save up for another Lilliput. A shame, the project was complete except for the audio being bridged (front left and right together, and rear left and right together) and sub not working.
For anyone interested I took a look at how Circuit City wired in the two cigarette lighter adapters and all they did was splice into the head unit's wiring since it wasn't in use. The next step is to figure out why it melted and shorted all this out. Anyone have any ideas??