Prior to his hiring at Auburn, he was the defensive backs' coach and co-defensive coordinator at Clemson University.
In his second stint with the Crimson Tide, Harbison worked with the wide receivers and helped Alabama to three bowl appearances.
Corey Webster, who played his first season as a cornerback under Harbison, finished second on the school's all-time career interceptions list.
He served as defensive backs coach in his first stop at Clemson (1995-97) as the Tigers played in three consecutive bowl games.
At Clemson, Harbison mentored 2018 Hall of Fame inductee and nine-time Pro Bowl selection Brian Dawkins, helping him earn All-America honors while also leading the ACC in interceptions in 1995.