Need some help. I have a nipple coming off of the coolant fill tank that I cannot identify. I know which one is the overflow and the other one leads to the turbo. However, I apparently disconnected a hose during my teardown and now I don't know where it should be connected to. The nipple is directly opposite the connection to the turbo. Pics below. Thanks for the help. This is from a 2002 2.0 liter

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