e36 fuel line diagram

[cswis]

I smelled gas when I filled up my 318i.  So l though the fuel pump was leaking but when I removed the rear seat and looked, I saw that one of the tubes was missing and the nipple was broken on the fuel pump/sending unit.  I can't find the tube that should be connected to it.  The car runs great, so where does the nipple connect to?  This is on the passenger side fuel pump and sending unit.