LS2 Wiring ?'s

[kochevy67]

I am at the point in my project where I thought I was finished with the wiring for the purpose of starting the car. I have a LS2 out of a 2006 GTO, I used the factory harness and rewired my car with a American Autowire harness. I am using a drive by wire throttle as well. The questions I have are concerning the GM harness. There is a rectangular plug white in color that has 13 or 14 wires in it. I was informed that the car will not run unless a select few of the wires are hooked up to something. My question is which colored wires and where do they get hooked up to. The other question I have is concerning a 5 wire black connector that is in the engine compartment on teh driver's side of the motor near the front. I was told the same about that connector. Do you guys have an idea on what I need to do to get the car to fire up besides having the ECM programmed. I appreciate any input you guys have.