Radiator problem just warm heat

[jt1776]

I have a 1969 C-20 that has a turbo 400 trans that I think I have it hook up wrong. Will the person I bought it from did. The top hose on the heater core goes to the water pump the bottom hose on the heater core goes to the manifold. There isn't any hose going to the top of the radiator. That line out is just plug ed up with a rubber hose. And the big hose goes to the bottom of the radiator. I do believe the trans line are correct because it drives fine except that the kick down switch isn't hooked up the wire is just hanging. Thanks I need the heat bad Its cold up here in Michigan.