The plan was to use them during floods, Civil Defence and search and rescue operations, and ''all sorts of emergencies''.
When Harris heard the army was starting to sell off its 1980s Unimogs he enlisted the help of Far North Mayor John Carter and Defence Minister Ron Mark to get a few for Northland.
''We were very lucky to get two. They are a koha, a gift, to the people of Te Tai Tokerau,'' Harris said.
A third Unimog was donated by Summit Forestry.
Harris is hoping to take them to marae in isolated communities in flood-prone areas such as North Hokianga to show what they are capable of.
But he also needs to find a group of volunteer mechanics to carry out ongoing maintenance, fundraisers and donors to help cover running costs, and ex-army drivers.
''We're looking for a group of people willing to help look after them and be kaitiaki,'' he said.
If you're interested call or text Mita Harris on 027 226 1584.