I wanna start off by saying, i have been searching for a few days now, and trying to read as much as i can.. i have some isspro ev2.. i have read the tutorial on setting it up for an ls1. But it also referees to a v1, I'm guessing that its basically the same.. however i am very unsure, when it comes to configuring the pid in efi live.. i find the pid in the tab, it shows psi, but no values. Could someone point me in the correct directions?

If i tap into the 5v signal wire and run it to the v2 and connect it to the positive side on the orange tee, on a/d input 1 do i also need to run a ground wire to the v2 as well?