In New Zealand's North Island, steam traction ended in 1968 when AB 832 (now stored at the Glenbrook Vintage Railway, Auckland, but owned by MOTAT) hauled a Farmers Trading Company "Santa Special" from Frankton Junction to Claudelands. In the South Island, due to the inability of the new DJ class diesel locomotives to provide in-train steam heating, steam operations continued using the J and JA class tender locomotives on the overnight Christchurch-Invercargill expresses, Trains 189/190, until 1971. By this time sufficient FS steam-heating vans were available, thus allowing the last steam locomotives to be withdrawn. Two AB class tender locomotives, AB 778 and AB 795, were retained at Lyttelton to steam-heat the coaches for the Boat Trains between Christchurch and Lyttelton, until they were restored for the Kingston Flyer tourist train in 1972.