1992 fuel pump

[Danth]

Hello All: just purchased a 1992 xj600 which had been in an accident, and the previous owner started tearing it apart. Lost some parts, lost interest, etc. I've got it pretty much back together, but can't figure out where the third hose goes from the fuel pump. One to the tank, one to the carburetor manifold, but how about the other one? Also, any secrets on getting the air box back onto the carbs? Thanks much, Dan