I've had an N3 for a few weeks but I just got all my wires and everything in today. I want to test the unit but I'm not sure how.

how do you test it in your house rather than hooking up to the car. (i dont plan on installing it until this weekend or early next week)

YOu need a 12volt 10 amp capable power supply. Hook yellow and red up to positive on the power supply and black to negative. Plug the brain into the head unit and turn the power supply on.