Thanks Dad. I guess someone here died huh?I'm not offended @digitalbliss . I might be if it were my question you were sidetracking with "comedy."
Rather, you're just acting like you started hitting the beer a bit earlier than most. Don't. Please.
OP: @Jaym according to the ESS wiring diagram https://www.jlwranglerforums.com/JL-Wiring-Diagrams/FUSES---BATTERY---ESS.pdf … and you will have to blow this PDF up quite a bit to see, on the left most side of the page it shows that your power pack's positive should connect to N2 on the higher order fuses of the Power Distribution Center (let me know if you need clarification on this).
Make sure you only come into contact with N2, not any neighboring high order fuses.
But before you do, disconnect all leads to your positive post on your main battery, and ground your power pack's negative.
I'd like Jerry @Jebiruph to confirm, but I think this is how you can get your power pack to directly connect to your ESS/Aux battery.
Once you crank, disconnect your power pack and carefully rehook the positive lead to the main battery.
Now @digitalbliss is the time for jokes. My suggestion: make some double entendre of the word "blow" above. Show some meme of someone literally blowing up a PDF file.