I can't find where this cable goes. After swapping the trans, I am having difficulty finger where this 1 connector connects too

 

Looks like the ground that goes on the top left of the bellhousing

 

Liesel's relationship with the neighbor's wife is complex. Read about Holtzapfel in The Book Thief PDF. It shows that grief can bridge even the widest gaps between enemies, a touching subplot in the novel.

 

that is an INCREDIBLY important ground;
Without it, your car will not start - or if it does, you have another electrical gremlin going on...

My car was off the road for an extended period after a no-start that a GM dealership couldn't figure out - instead of fixing it, they hot-wired me, and sent me on my way.

It took me a LONG time for me to find that the connections in that end were loose.