When the club became a limited company in 1899, Wilton was chosen as manager. Under his stewardship as manager, Rangers won eight league championships and another Scottish Cup, nine Glasgow Cups and seven Charity Cups. He also guided the club's move to the second (extant) Ibrox Park in 1899 and its response to the disaster at that venue three years later. In his final season as manager the club won its tenth league championship. Wilton died in a boating accident in May 1920. He was Rangers manager in 881 matches (not including his earlier spell as secretary), of which they won 553.