Wabasto BW80 on 1991 T-600, old Pride truck

I need to know if anyone is familar with how the water supply hooks into the water line on a DD1V engine, I had another engine installed but forgot which line the one way valve goes onto. It is a regulator type tube type valve that the engine hose from the engine comes straight through it and out the other side, on the bottom is two inlets for the wabasto BW80 to circulate the water into the supply line. Anyone have one of these setups? I guess i could just guess, it either will work or not ! It either comes off the water pump or out the block im guessing the water pump outlet.