OK Thank you. Found what I was looking for. I have the freezer part down no problem.
Now the fridge side. I don't have an electric thermostat on the fridge side. It uses a mechanical thermostat to mechanically open and close the damper to the freezer. So no wires there. I have a second STC for the fridge side. The cold will be using fans (push/pull) to move air from the freezer with new holes cut in the bulkhead.
So I can use the light's neutral wire to complete the circuit? And if I add heat (light in a can)?
Also, for the fans (push/pull), should these be wired in parallel?