I am so glad that there is a heater hose back there. I wonder if it is that far forward though.
It seems to be in front of the starter... :/

The water pump, thermostat and upper hose are new, coolant tank used, radiator rodded and resealed.
Old components are:
mechanical fan (I want an electric one), heater hose..s?, heater switch, and radiator cap, and lower radiator hose. I have a black cap and I think I should drop to a lower pressure cap.

I honestly never thought about the heater hoses back there when I overhauled the rest of the system.

thanks for the suggestion, I'll post back when I know something,
Will
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1990 740 Turbo, on its way to stock specs, maybe beyond