Where is the thermostat located on a 1989 VW Fox 1.8 4-cylinder?

it is real easy to find---first look at the water pump (under the alternator) follow the water hose to the engine block--take off the connection and there it is Not correct, follow the lower radiator hose from the radiator to the thermostat housing. 2 10 mm bolts hold the hose bib cover on, inside the housing is the thermostat.