How do you replace thermostat 94 Fleetwood?

To replace the thermostat on a 1994 Fleetwood, first, ensure the engine is cool, then disconnect the negative battery cable. Locate the thermostat housing, remove the bolts, and take off the housing to access the thermostat. Replace the old thermostat with a new one, ensuring it's oriented correctly, then reassemble the housing and reconnect the battery. Finally, refill the coolant if necessary and check for leaks before starting the engine.