Mercury 84 60hp hose connection guidance

[featherstoneryan9]

I recently bought a 1984 60hp 3cyl 2stroke. Mercury outboard. There’s a connecter hose going into the head on the left side, just above the first cylinder. I can’t figure out where this connects to. Can someone help me out?

 

[FishinLite]

It is the water pump flow "pee" tube