Pictures 2 & 3 show how the drain tube (i.e. the tube coming out from the top of the bottle in picture 1) was routed. It goes down into the drain hole at the bottom of the air box.
Pictures 2, 4, 5 & 6 show how the return tube (i.e. the tube coming out from the bottom of the bottle in picture 1) was routed. It goes out of the upper right side of the air box (picture 4) then over the rear shock's reservoir (picture 5) and follows behind the right side of the frame toward the radiator (picture 6) - continue on next page...