Hmm.
I guess it's time to break out the multimeter. I'll report back when that's done.
You are correct in guessing that I was using USB power before and now I'm using and external power source (12V regulated).
Thanks for the help.
This is the full detail of the project if you are curious: Interior - sti robot project (robotmeter project)-see post #461 if you want to test a setup out! | IW STi Forum