There are plenty of smart people here who can help. I would also recommend you call Mark at M.A.D.D. Electrical and talk to him about it. Here his his weblink:

http://www.madelectrical.com/catalog.shtml

Mark has forgotten more about Mopar electrical systems than I will ever know and he is a pleasure to speak to. He has kits for this but more than that, he is known for giving great advice for those who call. He can tell you what works and what doesn't and he will help you put together a safe plan.

I have never relocated my battery but I had some other electrical questions and tasks and he hooked me up with both parts and knowledge.

-Steve