Just like the title. I picked up some #4 (or 4 guage im not sure) wire for a welder ground to run for the positive when I moved the battery back. Do you think that will be fine, I hooked it all up and the battery was almost dead so I cant really tell how well its working, but I hooked a charger up and turned the system on and it was still working fine.

 

I wouldn't use anything smaller than #2 IMO.