In May 2012, he signed for Connacht, joining them ahead of the 2012–13 season. His first game for the province was against his former side Leinster on 28 September 2012. Harris-Wright came on as a replacement, as Connacht beat the Heineken cup holders 34–6. He made 14 league appearances in his debut season, all but two of these coming as starts, and scored his first try for the side in a Pro12 game against Edinburgh on 1 December 2012. Harris-Wright also made appearances in five of Connacht's six 2012–13 Heineken Cup group stage games, starting four.