1. Make sure you have an alt that can power both
2. + from front batt to back batt
3. - from front batt to back batt
4. - from back batt to a good ground
Oh ya forget to say fuse the positive on both ends. At least one end
http://www.stevemeadedesigns.com/board/topic/38791-torres-box-tuning-calculator/
Get this. When you do, read through the entire help menu. You want to maintain at least 5ish inches between the port and back hatch. I'd try the subs up and port back