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The vapour barrier goes on the inside or the warm side of the insulation. It's there to prevent condensation from saturating your insulation. Just insulate, apply vapour barrier and gyprock.
You can get housewraps and insulating blankets for the outside of your sheeting and basement walls, but applying it post-construction can get a bit pricey. I am just in the finishing throes of having done so. We stripped all the stucco and layers of siding beneath off the house, down to the sheathing and then put on 1.5" of rigid pink insulation and house wrap, then finished up with vinyl siding. I wouldn't even think of excavating to put the wrap on the basement walls, but if I had dug for some other reason I would seriously consider it while it was accessible.
Hope that helps.
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