you have to go back and check all you connections. solider,crimp,clean and grease everything. from your description it sounds like a disaster looking for a place to happen.
i know quite a few people using the trunk floor as the ground for the battery. is where it bolted down clean of any paint grease etc.. ? you usung crappu ends on that cable like on the positive side of the bat? do you have a ground strap from the body to the engine?
