Help please finding the water temp sensor on a b2000

just got a 87 b2000 the other day and been trying to fix a few lil things but i cant find the temp sensor any where can some one help me out ???? cheers  

ive found one in the passenger side bottom of the radiator but dont wanna dump all the coolant for it to turn out not to be it pics of where to look will help heaps anybody?  

i think they place them in the thermostat housing on all cars and trucks aka water out let of engine follow radiator tube top one. one end is radiator the other is the water out let of the engine look in that genral area for a 1or2 wire i think some time more. it's about 1-1/2 inch long and screwed into the thermostat housing so to contact the coolant. here what auto zone site says below . if i had aldata at home i would get you some pic's.      


Temperature Switch
  On your 1986 Mazda Truck B2000 (2.0L 2BL SOHC), the Temperature Switch is located:
Under hood, center, front engine area, mounted in top of water outlet



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hey thanx for the helpful reply still cant find anythin on the thermostat housing or anywhere near it Mazda service department told me it was on the opposite side near the dizzy .... very unhelpful there as i think they looked up the wrong model. i think it has the wronf thermostat houseing on so i might go to the wreckers see if i can find one if not gonna chuck on an after market adapter that goes in the top radiator hose

cheers  

Mazda B2000 and B2200 Coolant Diagram

The temperature sensor for the gauge is usually located where number 4 is just below the thermostat, sometimes you get some oddball where it is located somewhere else like under the intake manifold. The sensor stuck in the bottom of the radiator is a temperatures switch for the PTC heater. There should be a 3rd temperature sensor in the side of the intake manifold facing the battery with a green connector body on it. That is the coolant temperature sensor for the computer.