Volvo Repair: Cooling System on a 94 Volvo 940 4 Door Sedan, electric cooling fan, radiator hose

Question
Where are the locations of the thermostat housing and the temperature sensor that controls the electric cooling fan for the radiator, and what is the replacement procedure for these parts.  Also, are there any available diagrams?

Answer
Bill, Follow the top radiator hose to the cylinder head and you cant miss it.  There is a sensor that goes into the radiator then controlled by a relay.  Diagrams are available through the dealer or On Ebay.  I bought one for my car on CD as a backup.  Great diagram for 10 bucks.  Roger