Civic EG

Just have a quick question, I bought all the wireworx tuck harness for my b series, and I'm relocating my fuse box just need to know got the two main wires, I was under the assumption one was ground but every diagram I look at both seem to be power. So from my distribution block I need to run two power wires to it? And does which side matter where the charge wire needs to go on?

Here ya go.