The winning score, with 12:24 left, came one play after South Dakota quarterback Dante Warren fumbled.
Wright was 25 of 34 for 260 yards for the Aggies (3-3, 1-0 Great West). UC Davis only ran for 34 yards in the game, though Nick Aprile scored on a 1-yard run in the first half. Sean Creadick was the Aggies' top receiver with seven catches for 100 yards.
Chris Ganious was the leading rusher for South Dakota (3-3, 1-1) with 142 yards on 22 carries.
Warren ran 10 times for 88 yards, including the Coyotes' only touchdown. But he had a rough night passing, completing just 7 of 26 for 89 yards.