i have looked all over Google and this forum as well as many other sources but i still cant find what i am looking for :
i have a BOV like the pics ( not mine ) which came with my FD when i bought it :
i am just wondering about how to connect it
when i had the car B4 the rebuild both nipple were joint with a T and then that went to the UIM ... and it worked fine as far as i cold tell
anyone have an idea of how it works and y it requires 2 nipples to conenct

is it the correct /best way to use it ?
any alternatives?

what would happen if you cap the top ?

i am just unable to find any diagrams of the damn thing which might explain what is inside

thx