It is next to the thermostat housing.
front top of the motor skinny copper coated
190-210
It is next to the thermostat housing.
If the wiring and connections at the coolant temp sending unit check okay start with replacing the coolant temp sending unit. Temp sending unit should be less than $20.
Close to the thermostat housing.
check the temp sending unite on the water intake
Oil is on the back of motor at the top beside the distibutor Water temp is next to the thermostat. Fuel level is in the tank, on the side of the pump module.
Check the thermostut at first.  Your stut temp is too low. 
What sending unit are you looking for ? Fuel , oil pressure , water temp ?
THE temp sending unit 4 the inside gauge usally has 1 wire & the sending unit 4 the Computer has 2 wires.
Next to the thermostat housing.
The water temperature sending unit is on the front of the engine. It is next to the top water hose inlet connection.