91 cav stero/deck install

Hi, well i am installing a deck in my friends car for him, i have installed decks b4 swith no problem never in a cav though, it is a 91 rs, i was wondering how you take of the front pice to remove the deck and how the factory deck is removed and also if u kow the colors for teh spreaker wire from the factorey?? thanks alot!!!:)