Sorry for all of these questions this weekend... thank you for all the help! So, we're working on hooking up the battery to the wiring harness fuse panel that the fitment manual says to install on the top of the passenger footbox. Our understanding is that we connect the battery to the large inline fuse and then run a cable (which I think doesn't come with the kit) from the other side of the inline fuse to the fuse panel. This makes sense. The question we have is what do we do with that cable is already running from the wiring harness to the fuse panel (it came this way as shown in the picture below and is highlighted by the red arrow)

Do we remove this cable? Or keep it connected? It kind of looks like a ground - do we ground it?

Thank you very much, guys!