OK SO IN THE BACK COMPARTMENT OF MY 1978 BUMBLEBEE , i HAVE TWO BATTERIES ONE ON EACH SIDE. SOMEONE INSTALLED WHAT LOOKS LIKE A JUMPER WICH IS A COPPER PEICE WITH TWO POST ??? FROM WHAT I KNOW TO RUN PARRARELL OR SERIES U RUN BATTERY TO BATTERY WHY WOULD THEY HAVE ADDED THIS COPPER POST WITH...