This is my first attempt at putting together a carpc and I have a few questions. I just picked up a opus MPC-ITX and want to run it from my AC-DC (12V) converter in the house to set things up. I also have a lilliput touch screen (somebody already modified w/ a molex connector for power / ground) that I want to turn on when the computer power goes on w/ ignition.

According J1 on the following:

There are 2 ground (black), and 2 batt(yellow) lines. Should I connect the grounds together, and the batts together along with the ACC (red) an tie them into the - and + on my DC Power supply?

Also, should I just use the AUX (J7) Black and Yellow to connect to the Lilliput?

Thanks in advance!