Depending upon where you put your battery in your trunk, your will need 17-20ft of wire. I'm also in the process of moving my battery to the trunk. I ran the power wire(s) throught my firewall and under the carpet.
HTH, BP
Ben ---'96 Contour GL * Zetec ATX * Tan on Black steelies---
+++JRSC M62 Under Construction+++
My big-a$$ mod list.