Someone Please Help!!!

Hey. I m a new car guy. i m having some trouble installin my deck. I had no problem removing the basic deck that came with my 2001 Protege Es 2.0. I have all the wires connected to the right colours on the deck to the wirein harnes. i just have 2 wires left over a orange and black and a peach. all the other colours have a match. i go to turn my car on and the deck don't work.. WTF i don't want to have to pay for an install i m sure it is something so stupid that i will kick my own ass after i find out. Please someone leave me a msg to help a amature car guy become succesful.
Thanks Peace