Uh... what? There are 5 and a half connections to the radiator.
1. Engine to Radiator top hose. The first big one.
2. Radiator to engine bottom hose. The second big one.
3. Automatic transmission fluid cooler line in. Bottom center, on the engine compartment side.
4. Automatic transmission fluid cooler line out. Bottom center, on the engine compartment side.
5. Bleed line to the overflow bottle - attached to the neck on top where the cap goes.
5.5 Drain cock on the bottom, driver's side, engine compartment side. As long as you're driving a left hand drive vehicle, anyway.
Other than that, all there is to connect is mounts, shrouds, and fans.