How do you replace the thermostat 1996 dodge B3500 360 engine?

To replace the thermostat on a 1996 Dodge B3500 with a 360 engine, first ensure the engine is cool and disconnect the negative battery terminal. Drain the coolant from the radiator, then remove the upper radiator hose from the thermostat housing. Unbolt the thermostat housing, replace the old thermostat with a new one (making sure to align it correctly), and reassemble by reversing the steps. Finally, refill the coolant and check for leaks before starting the engine.