1974 914 1.8, Hose connection diagram needed Options

[Peter Zimmermann]

1974 1.8 project car. My fuel system resto is finished, the tank is back in the car, and I have questions regarding the expansion tank and charcoal cannister. First, the cannister is not installed (I have the correct part) because the hoses from the front to rear of the car are gone.

My tank has a small OD hose bib just below the gas filler cap. It has been pinched closed. Where did the hose originally attached to that bib connect to?

I have a somewhat flexible hard plastic line that passes through the center tunnel. It is not connected at either end. Where did its ends originally connect to?

What lines connected to the small OD hose bibs (2) on the expansion tank?

With the small OD hose bib at the gas cap pinched closed, can the tank vent enough past the filler cap, or can this be a source for poor running?

I have Clymer and Haynes manuals, neither shows how the cannister or hose bibs on the tank should be hooked up, can someone provide me with a diagram for the USA '74 car?

BTW; I have found the holes, used for the large diameter cannister hoses, under the rocker panel at the rear of the car, but cannot see where those hoses enter at the front end of the rocker panel. I would be willing to restore the charcoal cannister system with a proper diagram, as well as any advice regarding the forward hose entry point.

Thank you.