How do you change thermostat in 1996 ford ranger 2.3?

To change the thermostat in a 1996 Ford Ranger 2.3, first, ensure the engine is cool and disconnect the negative battery cable. Drain the coolant from the radiator, then remove the upper radiator hose connected to the thermostat housing. Unbolt the thermostat housing, replace the old thermostat with a new one (making sure to align it properly), and reassemble by reversing the steps. Finally, refill the cooling system with coolant and check for leaks.