Coolant overflow-resovoir tank hoses

[BnObob]

The overflow hose from my coolant tank is baked. One of those fabric
covered hoses (English size about 1/2" OD, & 1/4" ID.)

I replaced about a foot of it, near the tank, but after a few months, this repair also failed. So, I decided to replace the entire line. The top part, from
tank, through firewall to the battery/electronics area, and down to a grommet
on the inner fender wall is easy.

....but ! Where does it go from there? It is solid (must be hooked to something) and attempts to undo a rubber grommet and look up from under
car, or remove the inner (thin plastic) front-right wheel well interior cover
showed nothing of the other end of the hose routing.

I'm blind without a chassis manual. Please help, with a few words of
how to locate the other end of my overflow line !