Where the heck is the heater inlet hose for the 2003 LS? Need to flush coolant!

[LordJezo]

Eeesh.

I have the big manual for the car but none of the diagrams match. I am looking for the intake hose to attach the Prestone coolant flush adapter to but can't find the hose. Specifically I am looking for the hose that runs from the fire wall to the top of the engine, the heater inlet hose. It has always been easy on past cars but this one is sending me for a loop.

There are two large hoses on the back of the engine that are one on top of each other. Both of these go back to the radiator and the coolant reservoir but I have no idea which one to splice to hook up the adaptor.

Anyone out there know which one I am supposed to use?

Here is a picture of the hoses I am talking about. Is it either of these?



Click on the picture for the full size version if you can't see it clear there. Or click here

Thanks so much if anyone can help.