Ten-man Exeter continued their excellent form with a late 2-1 victory at Northampton.
The Grecians played the whole second half a man down but extended their unbeaten run to nine games thanks to Will Aimson's 83rd minute winner.
The visitors opened the scoring at Sixfields when Harris collected Dion Rankine's pass on 20 minutes and fired in off the post.
Jake Richards went close to adding to City's lead before an almighty goalmouth scramble at the other end saw Louis Appere, Mitch Pinnock and Marc Leonard all have efforts either blocked or saved.
Exeter lost a man in first-half stoppage-time with Ryan Woods sent off for violent conduct after clashing with home captain Jon Guthrie.
Northampton inevitably dominated possession in the second half but it took until the 74th minute for the equaliser to arrive when Exeter failed to deal with a long throw and Guthrie stabbed in the loose ball.
But despite their numerical disadvantage, the visitors snatched victory thanks to Aimson, who ghosted in at the back post to convert Zak Jules' cross seven minutes from time.