Steps:
-Follow the lower radiator hose (it leads to the thermostat housing)
-Locate the thermostat housing. (back passenger side of engine, under the intake manifold; pretty much right above the starter)
-there should be two approximately 3/4" heater lines that heads toward the fire wall
-follow them
-the hose with a flow control valve pretty close to the fire wall is the heater inlet hose.

take care,
ChrisS