the slashed edge og the 3 way goes into the t/b the other 2 ends it doesnt matter which way. 1 end is plugged and the other end goes to the catch can. oem had the 2 ends going to the t/b son it doesnt matter the orientation as long as it goes from the t/b to the catch can

your going 2 hoses to the can then back out to the t/b. the other end of the y is capped as it isnt used anymore