I love the fabrication idea. I remembered it when I needed to jumper terminals on a DIY UPS. It was lower current and about an inch long so I figured I could use copper pipe straps. You see them in the plumbing section of hardware stores in sort of a half circle config. Imagine my surprise when the "copper" started coming off! It turned out that they were just painted steel. Lesson learned - stick with real copper pipe.
95Pop210 - the Red Rover Roadtrek page should have some ideas for you: Red Rover Electrical Page
Another idea might be to expand your battery box. Years ago, Gary gave me permission to re-post some of his mods here. One of those mods was to fabricate a larger battery box: http://www.classbforum.com/forums/f8...ttery-325.html