Intimidating for sure but actually pretty simple and straight forward once you get into it. As long as you follow my initial post with the pin number/color wires you’ll be alright. Take your time, check twice and cut once.
1 plug is for the power and ground for the unit.
1 plug is for all of the inputs that you need, VSS, RPM, TPS.
1 plug is for outputs to the solenoids in the transmission.
It's just a lot of wires and all of the needed ones are in a auto car...