My suggestion is leave the battery in the engine compartment, and save yourself a ton of time and money. I would like to see if any actual testing has been done to prove if any actual performance is gained with a battery in the trunk. I know the car will gain weight with all the extra heavy wire. Your wallet will be lighter with all the parts you need to buy to do it correctly and safely. I won't ever do it again, lot of work for very little if any gain in my opinion. The engine compartment looks nicer, thats about it. I have a excellent wiring diagram, but I can't post it here, since I have it saved to my computer, not on a website. I hate the way Moparts is now, can't save good forum threads (lost tons of great ones), and impossible to add photos now. I can email you a version if you want it.