Multi Material mesh AO help

Hi! Need a hand with my AO texture.
I have a mesh of a building that has 7 materials, in the material editor all 7 materials have their texture applied correctly.
Where do i put my AO texture? It was created on UV channel 2 of the mesh.
I see each material has an AO node, but havent been having much luck.

Thanks for help!

Your mesh has unique UVs for every Material. Simply use the AO Textures of your Materials.

thanks for replying.

isnt there a way to use 1 AO texture for the entire mesh instead of per material? The entire mesh itself has a unique uv channel I created just for the ao.