heater hose lines are coming right off the water pump. you do know where the water pump is, do you? if not, you can look under your hood and you will notice 2 black hoses clamped together wrapping around the passenger side of the engine going into the passenger side of the firewall. there is a "to"line going into the heater core and a "return" coming from the core back to the water pump. a quick test would be to unhook the to line fron the water pump and see if there is even water flowing through it. if there is water flowing through it, it will drain out.