This gets asked enough that a Forum post is needed. On all of the 4-seater, the AA5 or Traveler, the AA5A or Cheetah, and the AA5B or Tiger, there is a #6 fire sleeved hose (wrench size 11/16th) and is 16 inches long and goes between the electric fuel pump and the mechanical fuel pump. This is usually removed from the electric pump and a 6 or 8 inch line in inserted and this new hose and the end of the old hose are installed (flow direction is critical) into the fuel flow transducer. Might be a good idea to check the date on your hoses as well.

Then all you have to do is secure the hose and transducer.

You can also install it by cutting the alum line in the cabin but not recommended as it adds two additional failure joints in the line, inside the cabin!