How do you install alternator on 2002 Chevy cavalier z24?

First remove battery cable. Remove drive belt with (13mm) or (15mm) I cant remember which wrench on belt tentioner,pulling towards front of car. Then 15mm bolt on the bottom of altenator. Then 15mm long bolt between chain housing and plastic intake. Then a few inches to the right just loosen the 3rd bolt. Its a tight squeeze, but work it out so you can unplug it and remove the 13mm nut on the back.(that wire goes to the battery)