A Daniel Kelly goal early in the second half paved the way for third-placed Dundalk to chalk up their fifth win in six games and close the gap on both Derry City and Shamrock Rovers after their defeats against Sligo Rovers and Drogheda United respectively.
But Stephen O’Donnell’s men had to work hard against a resolute Harps side who have now picked up just three points from their last seven outings.
Dundalk enjoyed plenty of possession early but it was Harps who produced the first real chance of note when following a free from Regan Donelon the ball fell into the path of Jesse Devers in a dangerous position but he was unable to get the telling connection required.