Just re-installed our rebuilt 2.3 into an 88 Ranger. Got all the electronics and vacuum hoses hooked up. The only thing I am puzzled about is the tee connecter from the heater hose. The heater hose from the thermostat has a tee in it. Off the tee is a 3/8 in. hose connected to a metal pipe that goes around the back of the engine and attached to another 3/8 hose. I need to know where to attach this end of the hose. Thanks for your help.